Environmental Science A Review

Something that might happen because of global warming is: __________. 

• A.  melting polar ice caps 
• A.  more reflected sunlight off the ice pack 
• A.  lower sea levels 
• A.  a sale on bathing suits

Over the past 200 years, the level of carbon dioxide in the atmosphere has

• decreased slightly.   
• increased until recently, and then decreased.
• increased steadily.   
• stayed about the same.

Increased carbon dioxide may cause global warming by

• allowing more sunlight into the atmosphere.
• reflecting more sunlight from clouds.
• reducing the amount of oxygen in the air.   
• trapping more heat in the atmosphere.

Plants use CO₂ in the process of ___________________ to make ___________ and oxygen.

• Photosynthesis and Water
• Photosynthesis and Sugar
• Photosynthesis and Coal
• Photosynthesis and Oxygen

a gas in the atmosphere that plants use during the process of photosynthesis

• carbon dioxide -oxygen cycle
• stomata
• oxygen cycle
• carbon dioxide

As the ocean absorbs carbon dioxide, what is occurring?

• ocean acidification

• temperatures are decreasing

• precession changes

How can sea level rise affect the biosphere?

• animals and plants can die

• the ground is saturated

• increase in evaporation

• increase in river flow

The average temperature of earth is rising. 

• True
• False 

What gas is increasing in large amounts due to human activities?

• water vapor
• carbon dioxide
• oxygen
• gasoline

Name of the gas that plants take in during photosynthesis.

• gasoline
• methane
• oxygen
• carbon dioxide