APES Chapter 3

How does carbon dioxide leave the atmosphere?

• Through transpiration
• Through photosynthesis
• Through factory emission
• Sunlight

Which process takes Carbon Dioxide from the air and converts it into a form of carbon used by living things?

• Precipitation
• Photosynthesis
• Respiration
• Bioremdiation

A particular golf course is using large amounts of nitrogen fertilizer. What process could move this nitrogen into a local stream?

• volatilization
• nitrogen fixation
• runoff
• ammonification

Growing legumes such as alfalfa or soy beans increases

• denitrification
• nitrogen fixation
• ammonification
• ammonium oxidation

Which of the following describes the role of nitrogen-fixing bacteria in the nitrogen cycle? Nitrogen-fixing bacteria convert

• nitrates intro nitrogen gas
• ammonia into proteins
• nitrogen gas into ammonia
• proteins into nitrates

When nitrogen gas is turned in to a form that plants and animals can use is called 

• Combustion
• Photosynthesis
• Decomposition
• Nitrogen Fixation

Carbon dioxide is added to the atmosphere by

• Burning fossil fuels 
• Cellular respiration
• Decomposing organic matter
• All answers are correct

During photosynthesis, carbon is moved from which reservoir (sink) to which reservoir (sink)?

• From the atmosphere to the terrestrial biosphere.
• From the troposphere to the terrestrial biosphere.
• From the lithosphere to the terrestrial biosphere.
• From the hydrosphere to the terrestrial biosphere

Which of the following processes converts C₆H₁₂O₆ to an inorganic molecule CO₂

• translation
• photosynthesis
• cellular respiration
• excretion

How much of the atmosphere is composed of nitrogen gas?

• 87%
• 38%
• 78%
• 21%