Page 64 - Science Course 3 (Book 1)

Human Impacts on Ecosystems Mo2-L3a: How Do Humans Affect Ecosystems?
Lesson 3

Non-Renewable Resource
resource that is used faster that it can be replaced by
In this topic, you will learn the following natural processes.
lessons:

Mo.2–L3a: How Do Humans Affect Ecosystems?

Mo2-L3a How Do Humans Affect
Ecosystems?

KEY CONCEPTS:
1. In what ways do humans affect ecosystems?
2. What can humans do to protect ecosystems and
their resources?

Vocabulary A-Z Resource Depletion
Let us learn some vocabulary the exhaustion of one or more resources in an area.

Renewable Resource
a resource that can be replenished by natural
processes at least as quickly as it is used.

Let’s Begin

Energy

Affecting the Environment
All organisms change the environment in some way.
Humans change ecosystems by replacing wildlife
habitats with buildings, roads, farms, and mines.

Humans’ use of energy resources such as coal and
natural gas can create pollutants that affect plant
and animal life in the air, the water, and on land

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