Page 78 - Science Course 3 (Book 1)

Ecosystem: Obtaining Energy Mo2-L5a: Who are the Producers and the
Lesson 5 Consumers?

Let’s Begin

In this topic, you will learn the following
lessons: Matter and Energy
Almost all of the matter on
Mo.2–L5a: Who are the Producers and the
Consumers? Earth today has been here
Mo.2–L5b: What are Food Chains and Food Webs? since it formed.
Matter can change
form, but it cannot be
created or destroyed.
Mo2-L5a Who are the Producers and
the Consumers?

KEY CONCEPTS:
1. How do matter and energy move through
ecosystems?

Vocabulary A-Z

Let us learn some vocabulary
Unlike matter, energy cannot be recycled, but it can
be converted.
Producer
an organism that uses an outside energy source, For example, the chemical energy in a log converts
such as the Sun, and produces its own food. to thermal energy and light energy when it burns.

Obtaining Energy

Most of the energy used by all organisms on Earth
comes from the Sun.

Producers are organisms that use an outside energy
source, such as the Sun, and produce their own food.

Consumer
an organism that cannot make its own food and gets
energy by eating other organisms.

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