Unit 4 Lesson 2 What Are Food Chains? Copyright © Houghton Mifflin Harcourt Publishing Company 1

Food Chains We are fed by the sun !! Unit 4 Lesson 2 What Are Food Chains? Food Chains We are fed by the sun !! Copyright © Houghton Mifflin Harcourt Publishing Company 2

Food Chains Unit 4 Lesson 2 What Are Food Chains? 3 Copyright © Houghton Mifflin Harcourt Publishing Company 3

Unit 4 Lesson 2 What Are Food Chains? A food chain is the transfer of food energy in a sequence of living things. In a diagram of a food chain, arrows show how energy moves. Copyright © Houghton Mifflin Harcourt Publishing Company 4

Food Chains Producers Unit 4 Lesson 2 What Are Food Chains? 5 Copyright © Houghton Mifflin Harcourt Publishing Company 5

Food Chains Unit 4 Lesson 2 What Are Food Chains? 6 Copyright © Houghton Mifflin Harcourt Publishing Company 6

Food Chains Unit 4 Lesson 2 What Are Food Chains? 7 Copyright © Houghton Mifflin Harcourt Publishing Company 7

Food Chains Unit 4 Lesson 2 What Are Food Chains? 8 Copyright © Houghton Mifflin Harcourt Publishing Company 8

You are what you eat Consumers Eat other living things. Unit 4 Lesson 2 What Are Food Chains? You are what you eat Consumers Eat other living things. Copyright © Houghton Mifflin Harcourt Publishing Company 9

Unit 4 Lesson 2 What Are Food Chains? You Are What You Eat Consumers can be grouped according to the types of food they eat. Copyright © Houghton Mifflin Harcourt Publishing Company 10

You Are What You Eat Unit 4 Lesson 2 What Are Food Chains? 11 Copyright © Houghton Mifflin Harcourt Publishing Company 11

You Are What You Eat Unit 4 Lesson 2 What Are Food Chains? 12 Copyright © Houghton Mifflin Harcourt Publishing Company 12

You Are What You Eat Unit 4 Lesson 2 What Are Food Chains? 13 Copyright © Houghton Mifflin Harcourt Publishing Company 13

Unit 4 Lesson 2 What Are Food Chains? You Are What You Eat Consumers can be grouped according to the types of food they eat. A consumer that eats only plants is an herbivore. A zebra is an herbivore. It eats grasses and other plants. Copyright © Houghton Mifflin Harcourt Publishing Company 14

Unit 4 Lesson 2 What Are Food Chains? You Are What You Eat A consumer that eats other animals is a carnivore. A lion is a carnivore. A consumer that eats both plants and animals is an omnivore. People are omnivores. A consumer that eats dead plants and animals is a scavenger. A vulture is a scavenger. Copyright © Houghton Mifflin Harcourt Publishing Company 15

Unit 4 Lesson 2 What Are Food Chains? You Are What You Eat Are these animals herbivores, carnivores, omnivores, or scavengers? Copyright © Houghton Mifflin Harcourt Publishing Company 16

You Are What You Eat Unit 4 Lesson 2 What Are Food Chains? 17 Copyright © Houghton Mifflin Harcourt Publishing Company 17

Game time You Are What You Eat Unit 4 Lesson 2 What Are Food Chains? Copyright © Houghton Mifflin Harcourt Publishing Company 18

Changes in Food Webs Q3 cw2 Unit 4 Lesson 2 What Are Food Chains? Changes in Food Webs Q3 cw2 Copyright © Houghton Mifflin Harcourt Publishing Company 19

Changes in Food Webs Q2 CW 2 Unit 4 Lesson 2 What Are Food Chains? Changes in Food Webs Q2 CW 2 Copyright © Houghton Mifflin Harcourt Publishing Company 20

Unit 4 Lesson 2 What Are Food Chains? Hunt or Be Hunted Consumers can also be grouped by whether they hunt or are hunted. A predator is an animal that hunts other animals. A lion is a predator. Copyright © Houghton Mifflin Harcourt Publishing Company 21

Unit 4 Lesson 2 What Are Food Chains? Hunt or Be Hunted An animal that is eaten is called prey. Deer and elk are prey for wolves in the Rocky Mountains. Copyright © Houghton Mifflin Harcourt Publishing Company 22

Unit 4 Lesson 2 What Are Food Chains? Hunt or Be Hunted An animal can be both a predator and prey. For example, a frog might eat insects; however, a snake might eat the frog. Copyright © Houghton Mifflin Harcourt Publishing Company 23

Food Chains Q1 CW1 Unit 4 Lesson 2 What Are Food Chains? 24 Copyright © Houghton Mifflin Harcourt Publishing Company 24

Q4 CW1 Unit 4 Lesson 2 What Are Food Chains? 25 Copyright © Houghton Mifflin Harcourt Publishing Company 25

Q6 cw1 Unit 4 Lesson 2 What Are Food Chains? 26 Copyright © Houghton Mifflin Harcourt Publishing Company 26

Activity Unit 4 Lesson 2 What Are Food Chains? 27 Copyright © Houghton Mifflin Harcourt Publishing Company 27

Food Webs Many living things eat more than one type of food. Unit 4 Lesson 2 What Are Food Chains? Food Webs Many living things eat more than one type of food. A food web shows the relationship among different food chains. Food web models use arrows to show who eats what. Copyright © Houghton Mifflin Harcourt Publishing Company 28

Q7 CW 1 Unit 4 Lesson 2 What Are Food Chains? 29 Copyright © Houghton Mifflin Harcourt Publishing Company 29

Food Webs Q1 CW 2 Make a food chain with these desert organisms. Unit 4 Lesson 2 What Are Food Chains? Food Webs Q1 CW 2 Make a food chain with these desert organisms. Copyright © Houghton Mifflin Harcourt Publishing Company 30

Changes in Food Webs Unit 4 Lesson 2 What Are Food Chains? 31 Copyright © Houghton Mifflin Harcourt Publishing Company 31

Changes in Food Webs (In very cold weather) Unit 4 Lesson 2 What Are Food Chains? Changes in Food Webs (In very cold weather) Copyright © Houghton Mifflin Harcourt Publishing Company 32

Unit 4 Lesson 2 What Are Food Chains? Changes in Food Webs Changes in food webs can affect all parts of a food web. If a living thing disappears from a food web, all living things that depend on it are affected. If a living thing is too numerous, resources such as food, water, and living space become limited. Copyright © Houghton Mifflin Harcourt Publishing Company 33

Changes in Food Webs Unit 4 Lesson 2 What Are Food Chains? 34 Copyright © Houghton Mifflin Harcourt Publishing Company 34

Changes in Food Webs Unit 4 Lesson 2 What Are Food Chains? 35 Copyright © Houghton Mifflin Harcourt Publishing Company 35

Unit 4 Lesson 2 What Are Food Chains? Copyright © Houghton Mifflin Harcourt Publishing Company 36

Unit 4 Lesson 2 What Are Food Chains? Copyright © Houghton Mifflin Harcourt Publishing Company 37

Unit 4 Lesson 2 What Are Food Chains? Copyright © Houghton Mifflin Harcourt Publishing Company 38