Unit 3A Final Review (Ecological Models)

The process of plants losing water through their leaves is called ____.

• condensation
• evaporation
• transpiration
• exhaling

Why do living things need nitrogen?

• To get energy

• To make amino acids

• To make proteins

• To make proteins AND amino acids

What is the only process that removes carbon from the atmosphere?

• combustion
• cellular respiration
• photosynthesis
• decomposition

Where is carbon stored in the environment?

• Fossil fuels
• Wood of trees
• Calcium carbonate (shells and bones)
• All of the above

What cycle are fossil fuels part of ?

• carbon

• oxygen

• nitrogen

• phosphorus

What is the largest reservoir for nitrogen?

• the ocean

• rocks and minerals

• the atmosphere

• bacteria

Carbon dioxide is added to the atmosphere by

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

During which phase of the nitrogen cycle do bacteria and lightning strikes convert  atmospheric nitrogen into a usable form?

• Ammonification
• Assimilation
• Nitrogen Fixation
• Nitrification

During which phase of the nitrogen cycle are nitrates taken up into plant roots?

• Ammonification
• Assimilation
• Nitrificaiton
• Denitrification

Which phase of the water cycle occurs through the stomata of plant leaves?

• Precipitation
• Evaporation
• Condensation
• Transpiration