APES Systems and Sustainability Review

Which process takes carbon dioxide from the air and converts it into organic molecules, like glucose?

• Precipitation

• Photosynthesis

• Respiration

• Bioremediation

Growing legumes such as alfalfa, peas or soy beans increases the process of 

• denitrification
• nitrogen fixation
• ammonification
• ammonium oxidation

Tags

NGSS.HS-LS2-3

Carbon dioxide is added to the atmosphere by

• Combustion of fossil fuels

• Cellular respiration

• Photosynthesis

• Decomposing organic matter

• Sedimentation

Which nutrient is not cycled through the atmosphere?

• carbon
• nitrogen
• phosphorous
• water

Tags

NGSS.HS-ESS2-6

The majority of the atmosphere is made of.....

• Water
• Nitrogen
• Carbon
• Oxygen

Process where decomposer bacteria convert detritus material into ammonia NH3 and ammonia ions NH4+

• Fixation

• Nitrification

• Ammonification

• Denitrification

Process where ammonia not taken up by plants is converted by soil bacteria into nitrate ions NO3- which are easily taken up by the roots of plants

• Fixation

• Nitrification

• Ammonification

• Denitrification

Which cycles are altered by human activity increasing acid precipitation?

• carbon

• nitrogen

• phosphorus

• sulfur

Which of the following cycles do humans impact by the runoff of fertilizers, which are responsible for algal blooms, as the algae die and decompose, bacteria use up the oxygen, causing fish kills.

• Carbon

• Nitrogen

• Phosphorus

• Sulfur

 Which step of the nitrogen cycle does NOT involve bacteria?

• Nitrogen fixation 
• Denitrification 
• Nitrification 
• Assimilation