Biogeochemical cycles

Where is carbon stored in the environment?

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

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

• combustion
• cellular respiration
• photosynthesis
• decomposition

In an ecosystem, what happens to the atoms of certain chemical elements, such as carbon, oxygen, and nitrogen?

• They move into and out of living systems.

• They are only found in abiotic factors.

• They move out of living systems and do not return.

• They move into living systems and remain there.

A particular golf course is using large amounts of nitrogen fertilizer. What process could move this nitrogen into a local stream?

• volatilization
• nitrogen fixation
• runoff
• ammonification

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.

If the plant population decreased, the amount of carbon would _________.

• Stay the same
• Increase
• Decrease

Each of the following is an abiotic factor in the environment EXCEPT

• temperature

• soil

• sunlight

• plant life

A nutrient whose availability negatively affects productivity of an ecosystem.

• nitrogen fixation

• aibiotic factor

• biotic factor

• limiting nutrient