Human Impact on the Ecosystem

Which contributes to erosion?

• agencies and people

• farming

• fossil fuels

• resource depletion

What is an effect of clearing forests?

• increased biodiversity

• increased oxygen emissions

• loss of food and habitat

The process of converting natural habitats into highly populated cities is known as

• agriculture

• urbanization

• resource depletion

What is a cause of urbanization?

• Human population increase

• Human population decrease

• Increased need for agriculture

Which of these chemicals is responsible for holes in the ozone layer?

• fertilizers

• pesticides

• chloroflurocarbons (CFC's)

Who makes wise choices to keep the environment healthy?

• politicians

• corporations

• agencies, like the EPA, and people

Which of the following is a renewable resource?

• lumber

• coal

• oil

• natural gas

___________ is the consumption of a resource faster than it can be replenished

• conservation of resources

• resource depletion

What nonrewable resource causes smog to form?

• fossil fuels

• fertilizers

• pesticides

What causes algal blooms in lakes and streams?

• fertilizers

• fossil fuels

• pesticides