Exploring Biogeochemical Cycles

What are the abiotic components of an ecosystem?

• Sunlight and temperature

• Bacteria and fungi

• Air, water, and soil

• Plants and animals

Which process involves liquid water turning into water vapor?

• Precipitation

• Evaporation

• Infiltration

• Condensation

What is the term for water vapor released from plants?

• Transpiration

• Runoff

• Evaporation

• Condensation

Which process converts CO2 into organic carbon using solar energy?

• Photosynthesis

• Decomposition

• Combustion

• Respiration

What is the main source of CO2 in the atmosphere due to human activities?

• Photosynthesis

• Combustion of fossil fuels

• Condensation

• Respiration

How do consumers obtain their carbon?

• Through transpiration

• By absorbing CO2 from the atmosphere

• By consuming food

• Through photosynthesis

What happens when oceans absorb too much CO2?

• They evaporate faster

• They release more oxygen

• They become more acidic

• They become more basic

What is the process called when bacteria convert atmospheric nitrogen into ammonia?

• Nitrification

• Denitrification

• Nitrogen fixation

• Ammonification

Which process involves the conversion of nitrates into atmospheric nitrogen?

• Assimilation

• Ammonification

• Denitrification

• Nitrification

What is the term for the process where dead organisms or their waste materials turn into a form usable by plants?

• Ammonification

• Assimilation

• Denitrification

• Nitrification