chapter 18

A forest fire moves carbon from

• a biotic reservoir to the air.

• the air to a biotic reservoir.

• an abiotic reservoir to the air.

• the air to an abiotic reservoir.

At the rainy equator, you will most likely find ___________, whereas at 30 degrees north and south, where it is drier, you will find ___________.

• tropical rainforest; grassland

• tropical rainforest; desert

• desert; tropical rainforest

• grassland; tropical rainforest

Ecological footprint is a measure of

• global warming

• fossil fuel usage

• sustainability.

• climate change.

Greenhouse gases

• decreased due to human activities

• increased due to human activities

• were not present before human activities

• have not changed as a result of human activities

Greenhouse gases are

• a biotic factor outside the biosphere

• an abiotic factor outside the biosphere

• a biotic factor in the biosphere

• an abiotic factor in the biosphere

Greenhouse gases have been given this name because they

• trap heat radiated from Earth's surface

• are similar to gases produced in a greenhouse

• are produced by plants

• are necessary for plant growth

Increasing greenhouse gases

• is caused by global warming

• does not affect global warming

• slows global warming

• speeds global warming

Loss of a seasonal pool of water causes the extinction of a particular species. This is an example of

• a biotic factor affecting an abiotic factor

• an abiotic factor affecting an abiotic factor

• an abiotic factor affecting a biotic factor

• a biotic factor affecting a biotic factor

One major difference between weather and climate is that

• climate shifts rapidly but weather is predictable

• weather is cyclical

• climate is the weather during a short interval

• weather changes rapidly but climate is predictable

Removing trees from a region

• decreases the amount of water entering the atmosphere

• decreases the amount of water in nearby streams

• increases the amount of precipitation

• decreases the amount of water in the soil