Page 10 - Science Course 3 (Book 1)

Atomic Bonds Mo1-L1a: What are Ecosystems?
Lesson 1

Population
all the organisms of the same species that live in the
In this topic, you will learn the following same area at the same time.
lessons:

Mo.1–L1a: What are Ecosystems?
Mo.1–L1a: What are the Abiotic and Biotic Factors
of an Ecosystem?

Mo1-L1a What are Ecosystems?

KEY CONCEPTS:
1. How can you describe an ecosystem?
2. In what ways can populations change?
Community
all the populations living in an ecosystem at the
Vocabulary A-Z same time

Let us learn some vocabulary

Ecosystem
all the living things and nonliving things in a given
area.

Population Density
the size of a population compared to the amount of
space available.

Habitat
the place within an ecosystem where an organism
lives; provides the biotic and abiotic factors an
organism needs to survive and reproduce.

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