1. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu How to Use This Presentation To View the presentation as a slideshow with effects select “View” on the menu bar and click on “Slide Show.” To advance through the presentation, click the right-arrow key or the space bar. From the resources slide, click on any resource to see a presentation for that resource. From the Chapter menu screen click on any lesson to go directly to that lesson’s presentation. You may exit the slide show at any time by pressing the Esc key.

2. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Chapter Presentation Transparencies Image and Math Focus Bank Bellringers Standardized Test Prep Visual Concepts Resources

3. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Fishes, Amphibians, and Reptiles Table of Contents Section 1 Fishes: The First Vertebrates Section 2 Amphibians Section 3 Reptiles Chapter B3

4. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 1 Fishes: The First Vertebrates Bellringer What are some of the physical characteristics shared by dinosaurs and people? Write your response in your science journal. Chapter B3

5. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 1 Fishes: The First Vertebrates Objectives List the four common body parts of chordates. Describe the two main characteristics of vertebrates. Explain the difference between an ectotherm and an endotherm. Describe four traits that fishes share. Describe the three classes of living fishes, and give an example of each. Chapter B3

6. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 1 Fishes: The First Vertebrates Chordates Animals that have a backbone are called vertebrates. Vertebrates belong to the phylum chordata. While vertebrates make up the largest group of chordates, some chordates, such as lancelets and tunicates, do not have a backbone. The four particular body parts shared by chordates are illustrated on the next slide. Chapter B3

7. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 1 Fishes: The First Vertebrates Chapter B3

8. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 1 Fishes: The First Vertebrates Vertebrate Characteristics Fishes, amphibians, reptiles, birds, and mammals are vertebrates. Vertebrates have a backbone which is a strong, flexible column of bones called vertebrae. Vertebrates have a well-developed head protected by a skull. The skull can be made of either bone or cartilage. Chapter B3

9. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 1 Fishes: The First Vertebrates Are Vertebrates Warm or Cold? All vertebrates need to live at the proper temperature. Animals have different ways to keep their body at the right temperature. Staying Warm An Endotherm is an animal that can use heat from chemical reactions in the body’s cells to maintain a constant body temperature. Birds and mammals are endotherms. These animals are sometimes called warmblooded. Chapter B3

10. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 1 Fishes: The First Vertebrates Are Vertebrates Warm or Cold? continued Cold Blood? An ectotherm is an organism that needs sources of heat outside of itself. Their body temperature changes as the temperature of the environment changes. Nearly all amphibians, reptiles, and fishes are ectotherms. These animals are sometimes called coldblooded. Chapter B3

11. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 1 Fishes: The First Vertebrates Fish Characteristics, continued Making Sense of the World Fishes have a brain that keeps track of information coming in from the senses. Most fishes also have a lateral line system. The lateral line is a row or rows of tiny sense organs on the side of fishes that detect water vibration. Underwater Breathing Fishes use their gills to breathe. A gill is respiratory organ in which oxygen from the water is exchanged with carbon dioxide from the blood. Chapter B3

12. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 1 Fishes: The First Vertebrates Fish Characteristics Chapter B3

13. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Click below to watch the Visual Concept. You may stop the video at any time by pressing the Esc key. Visual Concept Lateral Line System Section 1 Fishes: The First Vertebrates Chapter B3

14. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 1 Fishes: The First Vertebrates Fish Characteristics, continued Making More Fishes Most fishes reproduce by external reproduction. The female lays unfertilized eggs in the water, and the male drops sperm on them. Some species of fishes have internal fertilization. The male deposits sperm inside the female. Most females then lay eggs with embryos inside of them. In some species, the embryos develop inside the female. Chapter B3

15. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 1 Fishes: The First Vertebrates Kinds of Fishes There are five different classes of fishes. Two of these classes are now extinct. The three classes of fishes that are still alive today are jawless fishes, cartilaginous fishes, and bony fishes. Chapter B3

16. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 1 Fishes: The First Vertebrates Kinds of Fishes, continued Jawless Fishes The two kinds of modern jawless fishes are hagfish and lampreys. Hagfish and lampreys are eel-like. They have smooth slimy skin and a round, jawless mouth. Jawless fish have a notocord but no backbone. Chapter B3

17. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 1 Fishes: The First Vertebrates Kinds of Fishes, continued Cartilaginous Fishes In most vertebrates, soft cartilage in the embryo is slowly replaced by bone. But in sharks, skates, and rays, the skeleton never changes to bone. So, they are called cartilaginous fishes. Cartilaginous fishes have fully functional jaws. Cartilaginous fishes store a lot of oil in their livers to help them float. Chapter B3

18. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 1 Fishes: The First Vertebrates Kinds of Fishes, continued Bony Fishes The largest class of fishes is the bony fishes. These fishes have a skeleton made of bone and a body made of bony scales. Bony fishes have a swim bladder. A swim bladder is a gas-filled sac that is used to control buoyancy. Chapter B3

19. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Click below to watch the Visual Concept. You may stop the video at any time by pressing the Esc key. Visual Concept Swim Bladder Section 1 Fishes: The First Vertebrates Chapter B3

20. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 1 Fishes: The First Vertebrates Kinds of Fishes, continued There are two groups of bony fishes. Ray-finned fishes have pairs of fins supported by thin rays of bone. Lobe-finned fishes have fins that are muscular and thick. Chapter B3

21. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 2 Amphibians Bellringer Name an advantage and a disadvantage of the thin, moist skin of amphibians. Write your answers in your science journal. Chapter B3

22. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 2 Amphibians Objectives Explain how amphibians breathe. Describe amphibian metamorphosis. Describe the three groups of amphibians, and give an example of each. Explain why amphibians are ecological indicators. Chapter B3

23. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 2 Amphibians Moving to Land Amphibians are animals that can live in water and have lungs and legs. A lung is a saclike organ that takes oxygen from the air and delivers it to the blood. Most of today’s amphibians are frogs or salamanders. Fossils have been found of amphibians that looked very different––like a cross between a fish and salamander and up to 10 m long. Chapter B3

24. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 2 Amphibians Characteristics of Amphibians Amphibian means”double life.” Most amphibians live part of their lives in water and part of their lives on land. Embryos must develop in water. The eggs do not have a shell or membrane that prevents water loss, so the eggs would dry up on land. Adults can live on land. Amphibians are ecotherms. Staying in water helps them maintain a stable temperature and stops water loss. Chapter B3

25. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 2 Amphibians Characteristics of Amphibians, continued Thin Skin Amphibian skin is thin, smooth, and moist. The skin is so thin that amphibians absorb water through it instead of drinking. Amphibians can also lose water through their skin and become dehydrated. Their thin skin is one reason amphibians live in water or damp habitats. Amphibians can breathe by gulping air. Many also absorb oxygen through their skin. Chapter B3

26. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 2 Amphibians Characteristics of Amphibians, continued Leading a Double Life Most amphibians change form as they grow. A tadpole is an immature frog or toad that must live in the water. They have gills and tails like fishes. As a tadpole grows, it develops limbs and lungs and loses its tail and gills. This change from an immature form to an adult form is called metamorphosis. Chapter B3

27. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 2 Amphibians Chapter B3

28. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 2 Amphibians Kinds of Amphibians Caecilians Caecilians live in tropical areas of Asia, Africa, and South America. They look like earthworms or snakes, but they have the thin, moist skin of amphibians. Salamanders As adults, most salamanders live under stones and logs in the woods of North America. They have long tails and four strong legs. Salamanders do not develop as tadpoles. But most do lose gills and grow lungs during development. Chapter B3

29. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 2 Amphibians Kinds of Amphibians, continued Frogs and Toads About 90% of all amphibians are frogs or toads. They live all over the world, except in very cold places. Frogs and Toads are highly adapted for life on land. Adults have strong leg muscles for jumping They have well-developed ears, vocal cords, and a long, sticky tongue. Chapter B3

30. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 2 Amphibians Kinds of Amphibians, continued Singing Frogs Frogs force air from their lungs over their vocal cords to make sound. A thin-walled sac of skin called the vocal sac surrounds the vocal cords and increases the volume of the songs. Frogs sing songs to communicate messages about attracting mates and marking territories. Chapter B3

31. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 2 Amphibians Amphibians as Ecological Indicators Unhealthy amphibians can be an early sign of changes in an environment. Amphibians are ecological indicators because they are very sensitive to changes in the environment. Their thin skin absorbs any chemicals in the water or air. Chapter B3

32. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 3 Reptiles Bellringer List three adjectives you associate with reptiles Record your list in in your science journal. Chapter B3

33. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 3 Reptiles Objectives Explain the characteristics that allow reptiles to live on land. Describe the characteristics of an amniotic egg. Name the four groups of modern reptiles, and give an example of each. Chapter B3

34. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 3 Reptiles Living on the Land Reptiles have many characteristics that make them well suited for life on land. Many reptiles are now extinct. Extinct species include dinosaurs, reptiles that could swim, others that could swim, and many that were similar to reptiles that are alive today. Chapter B3

35. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 3 Reptiles Characteristics of Reptiles Reptiles are well adapted for life on land. Thick Skin Reptiles have thick skin that forms a watertight layer that keeps cells from losing water. Body Temperature Nearly all reptiles are ectotherms. They are active when it is warm outside, and they slow down when it is cool. They do not live in very cold environments. Chapter B3

36. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 3 Reptiles Characteristics of Reptiles, continued The Amazing Amniotic Egg An egg that holds fluid that protects the embryo is called an amniotic egg. Reptiles, birds, and mammals have amniotic eggs. Reptiles eggs also have a shell. The shell protects the embryo and keeps the egg from drying out. A reptile’s eggs can be laid under rocks, in the ground, or even in the desert. Chapter B3

37. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 3 Reptiles Chapter B3

38. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 3 Reptiles Kinds of Reptiles Turtles and Tortoises Generally, tortoises live on land, and turtles spend all or much of their lives in the water. However, even sea turtles come on land to lay their eggs. The trait that makes turtles and tortoises so unique is their shell. The shell gives them protection, but also makes them slow and inflexible. Chapter B3

39. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 3 Reptiles Kinds of Reptiles, continued Crocodiles and Alligators Crocodiles and alligators spend most of their time in the water. Because their eyes and nostrils are on the top of their flat heads, they can hide with most of their body under water. Chapter B3

40. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 3 Reptiles Kinds of Reptiles, continued Snakes and Lizards Today, the most common reptiles are snakes and lizards. Snakes have many adaptations for hunting. They can “taste” if their prey is nearby. Some snakes have venomous fangs for killing prey. Other snakes squeeze their prey until they suffocate it. Snakes swallow their prey whole. Chapter B3

41. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 3 Reptiles Kinds of Reptiles, continued Most lizards eat small insect and worms, but some lizards eat plants. Many lizards can break their tails off to escape predators and then regrow new tails. Chapter B3

42. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 3 Reptiles Kinds of Reptiles, continued Tuataras Tuataras live on only a few islands off the coast of New Zealand. Although they look similar to lizards, the two reptiles have some obvious differences. Tuataras do not have visible ear openings. Unlike other reptiles, tuataras are most active when the temperature is low. Chapter B3

43. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Fishes, Amphibians, and Reptiles Use the terms below to complete the concept map on the next slide. Concept Map Ectotherms Lungs Vertebrates Endotherms Reptiles Fishes Amphibians Metamorphosis Chapter B3

44. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Fishes, Amphibians, and Reptiles Chapter B3

45. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Fishes, Amphibians, and Reptiles Chapter B3

46. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu End of Chapter B3 Show

47. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation Read each of the passages. Then, answer the questions that follow each passage. Reading Chapter B3

48. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation Passage 1 Only a few kinds of fishes are endotherms. These fishes depend on their environment for most of their body heat but can heat parts of their bodies by internal cell activity. Because they can produce heat within their bodies, endothermic fishes can hunt for prey in extremely chilly water. As a result, they face limited competition with other fishes because few species of fishes can live in cold areas. Yet endothermic fishes pay a high price for their ability to inhabit very cold areas. Continued on the next slide Chapter B3

49. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation Passage 1, continued Producing heat by internal cell activity uses a lot of energy. For this reason, some fishes, such as swordfish, marlin, and sailfish, have adaptations that let the fishes heat only a few body parts. These fishes warm only their eyes and brain. Heating just these parts of the body uses less energy than heating the entire body does. Chapter B3

50. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 1. In this passage, what does inhabit mean? A to use energy in B to live in C to heat up D to eat in Chapter B3

51. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 1. In this passage, what does inhabit mean? A to use energy in B to live in C to heat up D to eat in Chapter B3

52. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 2. Which of the following statements is a fact according to the passage? F Tuna always live in very cold areas. G Most prey live in extremely chilly water. H Some fishes that heat parts of their body can hunt for prey in cold water. I The eyes and the brain are the most important parts of a fish’s body. Chapter B3

53. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 2. Which of the following statements is a fact according to the passage? F Tuna always live in very cold areas. G Most prey live in extremely chilly water. H Some fishes that heat parts of their body can hunt for prey in cold water. I The eyes and the brain are the most important parts of a fish’s body. Chapter B3

54. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 3. Which fishes can heat certain parts of their bodies and hunt in extremely cold waters? A most fishes B swordfish, marlin, and sailfish C no fishes D tropical fishes Chapter B3

55. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 3. Which fishes can heat certain parts of their bodies and hunt in extremely cold waters? A most fishes B swordfish, marlin, and sailfish C no fishes D tropical fishes Chapter B3

56. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation Passage 2 Fishes are quicker and much more maneuverable than most ships and submarines. So, why aren’t ships and submarines built more like fishes—with tails that flap back and forth? This question caught the attention of some scientists at MIT, and they decided to build a robot model of a bluefin tuna. This robot fish is 124 cm long. It contains six motors and has a skeleton made of aluminum ribs and hinges. These scientists think that if ships were designed more like the bodies of fishes, the ships would use much less energy than they currently use. If the new design does require less energy—and thus less fuel—the ships will save money. Chapter B3

57. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 1. According to the passage, what is one reason that scientists are designing a robot model of a fish? A Designing ships to work more like fishes’ bodies might save energy. B Fishes’ bodies do not use much energy. C Bluefin tuna have tails that move back and forth. D Designing ships to work more like fishes’ bodies could reduce ocean pollution levels. Chapter B3

58. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 1. According to the passage, what is one reason that scientists are designing a robot model of a fish? A Designing ships to work more like fishes’ bodies might save energy. B Fishes’ bodies do not use much energy. C Bluefin tuna have tails that move back and forth. D Designing ships to work more like fishes’ bodies could reduce ocean pollution levels. Chapter B3

59. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 2. What does maneuverable probably mean? F able to move easily G able to move like a robot H made of aluminum I fuel efficient Chapter B3

60. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 2. What does maneuverable probably mean? F able to move easily G able to move like a robot H made of aluminum I fuel efficient Chapter B3

61. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 3. Which of the following statements is a fact according to the passage? A Fueling ships is very expensive. B Some MIT scientists built a robot fish. C Designing a ship that moves like a fish will save money. D Fishes are 124 cm long. Chapter B3

62. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 3. Which of the following statements is a fact according to the passage? A Fueling ships is very expensive. B Some MIT scientists built a robot fish. C Designing a ship that moves like a fish will save money. D Fishes are 124 cm long. Chapter B3

63. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation This chart shows the kinds of amphibians that are threatened or endangered in the United States. Use the chart to answer the questions that follow. Interpreting Graphics Chapter B3

64. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 1. Which amphibian group has the most threatened and endangered species in the United States? A frogs B salamanders C toads D caecilians Chapter B3

65. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 1. Which amphibian group has the most threatened and endangered species in the United States? A frogs B salamanders C toads D caecilians Chapter B3

66. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 2. If the total number of threatened and endangered amphibian species in the United States is 22, how many species of salamanders are threatened or endangered? F 4 G 6 H 12 I 22 Chapter B3

67. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 2. If the total number of threatened and endangered amphibian species in the United States is 22, how many species of salamanders are threatened or endangered? F 4 G 6 H 12 I 22 Chapter B3

68. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 3. If the total number of threatened and endangered amphibian species in the United States is 22, how many more species of salamanders are threatened or endangered than species of frogs and toads? A 12 B 10 C 6 D 2 Chapter B3

69. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 3. If the total number of threatened and endangered amphibian species in the United States is 22, how many more species of salamanders are threatened or endangered than species of frogs and toads? A 12 B 10 C 6 D 2 Chapter B3

70. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation Chapter B3

71. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 4. Which of the following statements about the pie chart is true? F The chart does not have any information about amphibians outside of the United States. G The chart shows that amphibians outside of the United States are also endangered and threatened. H The chart shows that frogs are more sensitive to environmental pollution than toads are. I The chart shows that amphibians are ecological indicators. Chapter B3

72. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 4. Which of the following statements about the pie chart is true? F The chart does not have any information about amphibians outside of the United States. G The chart shows that amphibians outside of the United States are also endangered and threatened. H The chart shows that frogs are more sensitive to environmental pollution than toads are. I The chart shows that amphibians are ecological indicators. Chapter B3

73. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation Read each question, and choose the best answer. Math Chapter B3

74. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 1. Suppose that a snake eats a mouse that has one- third more mass than the snake does. If the snake has a mass of 4.2 kg, what is the mass of the mouse? A 1.4 kg B 2.8 kg C 4.2 kg D 5.6 kg Chapter B3

75. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 1. Suppose that a snake eats a mouse that has one- third more mass than the snake does. If the snake has a mass of 4.2 kg, what is the mass of the mouse? A 1.4 kg B 2.8 kg C 4.2 kg D 5.6 kg Chapter B3

76. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 2. One year, there were 2,000 salamanders in a state park. If the population decreased by 8% each year for 3 years, what would the salamander population be after the 3-year period? F 1,520 salamanders G 1,557 salamanders H 1,840 salamanders I 1,898 salamanders Chapter B3

77. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 2. One year, there were 2,000 salamanders in a state park. If the population decreased by 8% each year for 3 years, what would the salamander population be after the 3-year period? F 1,520 salamanders G 1,557 salamanders H 1,840 salamanders I 1,898 salamanders Chapter B3

78. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 3. What is the volume of a rectangular fish tank that is 1 m wide, 2 m long, and 1.5 m tall? A 3 m 2 B 3 m 3 C 4.5 m D 4.5 m 3 Chapter B3

79. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation 3. What is the volume of a rectangular fish tank that is 1 m wide, 2 m long, and 1.5 m tall? A 3 m 2 B 3 m 3 C 4.5 m D 4.5 m 3 Chapter B3

80. Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Standardized Test Preparation Chapter B3