Exploring Biogeochemical Cycles in Ecology

What is another name for biogeochemical cycles?

• Nutrient cycles

• Carbon cycles

• Water cycles

• Energy cycles

Which of the following is NOT one of the three main cycles covered in the course?

• Water cycle

• Carbon cycle

• Nitrogen cycle

• Phosphorus cycle

What drives the water cycle?

• Wind

• Moon

• Sun

• Gravity

Which process in the water cycle involves water seeping into the ground?

• Evaporation

• Condensation

• Transpiration

• Infiltration

What is the chemical formula for glucose, a form of carbon?

• CH4

• CO2

• H2O

• C6H12O6

Which process in the carbon cycle involves plants taking in CO2 and converting it to sugar?

• Combustion

• Photosynthesis

• Decomposition

• Cellular respiration

What is the main human activity that increases CO2 in the atmosphere?

• Fishing

• Agriculture

• Combustion

• Deforestation

What is the term for bacteria converting nitrogen from the air into forms plants can use?

• Denitrification

• Nitrification

• Nitrogen fixation

• Ammonification

Which of the following is NOT a form of nitrogen in the nitrogen cycle?

• N2

• NH3

• NO3-

• CO2

What is the main negative impact of artificial fertilizers on the nitrogen cycle?

• Decreased runoff

• Increased transpiration

• Eutrophication

• Increased photosynthesis