Science Lesson 4: How do humans impact ecosystems?

What is any substance that does something bad to the environment called?

• pollution

• chemicals

• batteries

• trash

What is an example of pollution?

• paper

• smoke from factories

• metallic straws

• water

What are nonnative species?

• plants or animals that grow naturally in an ecosystem

• species that move from one place to another

• species that help the environment

• plants or animals that do NOT grow naturally in an ecosystem

What is an example of regulation?

• letting everyone hunt and fish

• bringing animals that belong in other ecosystems

• fishing licenses

• prohibiting zoos

What is an attempt to protect and preserve an environment from harmful changes?

• conservation

• communication

• confirmation

• pollution