Unit 1 Lesson 8 Game

What kind of changes can humans make on an ecosystem?

• only positive

• only negative

• more negative than positive

• more positive than negative

Which of the following is a positive change humans can create?

• farming crops

• building dams

• planting trees

• logging forests

How does a growing human population affect the ecosystem?

• forests are cut down

• buildings take up space

• wetlands are filled in

• all of the above

Air pollution is caused by

• Cars and factories burning fuels

• factories creating liquid waste

• people dumping harmful chemicals

• a population damming a river

How much of the goods that you need are made or produced using natural resources?

• 0%

• 50%

• 75%

• 100%

Strip mining is an example of a ________to an ecosystem.

• long-term change

• short-term change

• restoring change

• harmless change

Which of the following will do the least harm to the ecosystem?

• using recycled aluminum

• building a dam

• using electricity

• planting crops

Tires and sunken boats

• Are good artificial reefs

• create dams in rivers

• are used in tree logging

• produce useful energy

An invasive species is destructive because it

• Destroys the soil

• Uses up resources

• Causes pollution

• Is a predator

________________ filter algae from the water, killing native fish.

• Nutria

• Salmon

• Kudzu vines

• Zebra mussels