Biogeochemical Cycles Quiz

Which of these processes is a carbon sink?

• combustion
• cellular respiration
• photosynthesis
• decomposition

What is the most abundant gas in the atmosphere?

• hydrogen
• oxygen
• helium
• nitrogen

Which one of these does not add CO₂ to the atmosphere?

• cooking with gas

• planting trees

• burning wood

• riding in a bus

Organisms that break down dead plants & animals and release nitrogen back into atmosphere...

• bacteria
• plants
• animals
• producers

Identify the cycle pictured.

• The Water cycle
• The Carbon cycle
• The Nitrogen cycle
• The Phosphorus cycle

Identify the cycle pictured.

• The Water cycle

• The Carbon cycle

• The Nitrogen cycle

• The Phosphorus cycle.

Identify the cycle pictured.

• The Water cycle

• The Carbon cycle

• The Nitrogen cycle

• The Phosphorus cycle.

Respiration is the process by which ____________ is consumed and _______________ is produced.

• Carbon, Oxygen
• Oxygen, Carbon dioxide
• H20, oxygen
• Carbon, H2O

Organisms use nitrogen to form

• carbohydrates and lipids
• proteins and lipids
• lipids and nucleic acids
• proteins and nucleic acids

What is the term for when nutrients are turned into forms usable by most plants and animals?

• bacteria

• biogeochemical cycle

• fixation

• disruption