Unit 2 Environmental

An “invasive species” is defined as a species that is _______ to the ecosystem.

• Natural

• Non-native or alien

• Always harmful

Invasive species can harm native species populations by:

• Competing for resources

• Fouling the water

• Increasing available habitat

What effect would cleaning up the environment have on moth color?

• The population of dark colored moths would increase

• The population of dark colored moths would decrease

• There would be no change

Which term describes the total of all the ecosystems on Earth?

• Hydrosphere

• Biosphere

• Cryosphere

Use the dichotomous key below to answer the next two questions.

Using the dichotomous key, identify the organism pictured below.

Using the dichotomous key, identify the organism pictured below.

• Lepomis macrochirus

• Parabuteo unicinctus

• Micropterus salmoides

Which piece of legislation protects organisms at risk of becoming extinct?

• National Park Service Act

• Endangered Species Act

• Clean Water Act

Which invasive species made its appearance in the south after WWII due to the shipping industry in New Orleans?

• zebra mussels

• termites

• kudzu vine

The process that changes nitrogen into a form that is usable by plants is called ______________________.