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Relationships Among Living Things

Science, Grade 3

Living things that break down waste or living things that have died in an environment are called decomposers. Decay occurs when decomposers break down dead animals and waste. Decay adds nutrients to the soil which then helps plants to grow. Living things interact in many ways. These interactions can help, harm, or do nothing to a living thing. Living things can help each other in groups. An example of this is members of a wolf pack protecting each other. An example of one living thing helping another living thing without being helped itself or harmed is barnacles on a whale. Two living things can both help each other at the same time. An example of this is a bee spreading pollen and getting nectar for itself. Living things need energy in order to survive. Energy is passed between living things through a food chain. Food chains include producers and consumers interacting together. An example of a food chain is a plant eaten by a mouse which is then eaten by an eagle. Consumers eat producers. When a consumer eats a producer, energy is passed from the plant to the animal. A food web is the energy flow within a community and is made up of more than one food chain. Producer Plants are producers, which means that they can make their own food using energy from sunlight. Consumer Living things that are not able to make their own food are called consumers. Consumers are made up of herbivores, carnivores, and omnivores. An herbivore is a living thing that only eats plants. A carnivore is a living thing that only eats other animals. A living thing that eats both plants and other animals is called an omnivore. e n e rg y flo w energy flow hawk eagle ferret prairie dog mouse snake beetle butterfly prairie chicken prairie dog rabbit grasshopper coyote © Copyright NewPath Learning. All Rights Reserved. 94-4305 Relationships Among Living Things
e n e rg y flo w energy flow Key Vocabulary Terms carnivore food chain community food web consumer herbivore decomposer omnivore energy producer How do living things interact with one another? ________________________________________________________ ________________________________________________________ ________________________________________________________ ________________________________________________________ What is a food chain? ________________________________________________________ What is a food web? ________________________________________________________ How does energy pass from one organism to another? ________________________________________________________ What is a decomposer? __________________________________ _________________ ______________ ____________ ____________ ____________ What is a consumer? ___________________________ ___________________________ ___________________________ ___________________________ What is a carnivore? ________________________ ________________________ ________________________ ________________________ What is a producer? ___________________________ ___________________________ ___________________________ ___________________________ What is a herbivore? ___________________________ ___________________________ ___________________________ What is an omnivore? _________________________ _________________________ _________________________ Relationships Among Living Things © Copyright NewPath Learning. All Rights Reserved. 94-4305 \|xiBAHBDy01721pzY
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