Biogeochemical cycles

Which is NOT a process of the water cycle?

• precipitation
• freezing
• transpiration
• evaporation

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

• condensation

• evaporation

• transpiration

• exhaling

Why do living things need nitrogen? Choose the best answer

• To get energy

• To make amino acids

• To make proteins

• To make proteins and DNA /RNA

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

Which nutrient is not cycled through the atmosphere?

• carbon
• nitrogen
• phosphorous
• water

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

Nitrogen fixation is the process in which bacteria convert nitrogen gas into _. Choose the best answer

• liquid nitrogen

• nitrates

• nitrites

• ammonia

According to the diagram, geologic activity, such as volcanoes,

• Increases the levels of CO₂ in the atmosphere.

• Decreases the levels of CO₂ in the atmosphere.