Unit 10 Lesson 3 What Are Food Chains? Copyright © Houghton Mifflin Harcourt Publishing Company 1
Unit 10 Lesson 3 What Are Food Chains? Florida Benchmark SC.4.L.17.3 Trace the flow of energy from the Sun as it is transferred along the food chain through the producers to the consumers. Copyright © Houghton Mifflin Harcourt Publishing Company 2
Unit 10 Lesson 3 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 3
Unit 10 Lesson 3 What Are Food Chains? You Are What You Eat Consumers are grouped according to the kind of food they eat. A consumer that eats only plants is an herbivore. A zebra is an herbivore. Copyright © Houghton Mifflin Harcourt Publishing Company 4
Unit 10 Lesson 3 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. Vultures are scavengers. Copyright © Houghton Mifflin Harcourt Publishing Company 5
Unit 10 Lesson 3 What Are Food Chains? You Are What You Eat Are these animals herbivores, carnivores, omnivores, or scavengers? Copyright © Houghton Mifflin Harcourt Publishing Company 6
Unit 10 Lesson 3 What Are Food Chains? Hunt or Be Hunted Consumers are grouped by whether they hunt or are hunted. A predator is an animal that hunts other animals. An animal that is eaten is called prey. Copyright © Houghton Mifflin Harcourt Publishing Company 7
Food Webs Many living things eat more than one kind of food. Unit 10 Lesson 3 What Are Food Chains? Food Webs Many living things eat more than one kind of food. A food web shows the relationship among different food chains. Food web models use arrows to show what eats what. Copyright © Houghton Mifflin Harcourt Publishing Company 8
Food Webs Make a food chain with these living things. Unit 10 Lesson 3 What Are Food Chains? Food Webs Make a food chain with these living things. Copyright © Houghton Mifflin Harcourt Publishing Company 9
Unit 10 Lesson 3 What Are Food Chains? Changes in Food Webs Changes in a food web affect all living things in the 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 10