Page 55 - Science Course 3 (Book 1)
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Ecosystems: Movement of Energy and Matter Mo2-L2a: How Energy is
Transferred?
Lesson 2
Food Web
a model of energy transfer that can show how the
In this topic, you will learn the following food chains in a community are interconnected.
lessons:
Mo.2–L2a: How Energy is Transferred?
Mo.2–L2b: How Do Matter Move in an Ecosystem?
Mo2-L2a How Energy is Transferred?
KEY CONCEPTS:
1. How does energy move through an ecosystem?
Vocabulary A-Z
Let us learn some vocabulary
Producer
an organism that uses an outside energy source,
such as the Sun, and produces its own food.
Let’s Begin
Food Energy
Producers are organisms that use an outside energy
source, such as the Sun, and produce their own food.
Consumer Most producers—green plants, algae, and some
an organism that cannot make its own food and gets kinds of bacteria—make energy-rich compounds
energy by eating other organisms. through photosynthesis.
Detritivore
an organism that consumes the bodies of dead
organisms and wastes produced by living organisms.
Worm Bacteria
Mushroom Insects
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