Biogeochemical Cycles Quiz

Burning fossil fuels coupled with deforestation increases the amount of _____ in the atmosphere

• phosphorus

• carbon dioxide

• ozone

• sulfur dioxide

• all of these

Phosphorus is being added to the environment by all of the following activities EXCEPT

• runoff from animal feed lots

• stream runoff

• leaching from the soil

• burning coal and fossil fuels

• mining operations to produce fertilizer

Carbon dioxide is a reactant in ______________

• photosynthesis

• respiration

• nitrogen fixation

• The Haber-Bosch process

• None of these

Which of the following has NO EFFECT on the nitrogen cycle?

• the application of inorganic fertilizers applied to the soil

• action of anaerobic bacteria on livestock waste

• the overplanting of nitrogen rich plants

• discharge of solid waste from a sewage plant

• burning fossil fuels

The energy that drives the hydrologic cycle comes primarily from

• trade winds

• solar energy and gravity

• Earth's rotation

• ocean currents

• solar radiation

Ammonium (NH₄⁺) are converted to nitrate (NO₃-) and nitrite (NO₂-) through which process?

• assimilation

• denitrification

• nitrogen fixation

• nitrification

• ammonification

Which form of nitrogen is MOST usable to MOST plants?

• nitrate

• nitrogen gas

• ammonium

• ammonia

• atomic nitrogen

Which of the following is NOT a way that carbon is incorporated in to the ocean?

• it diffuses into the ocean directly from the air

• stored in the sediments at the bottom of the ocean

• used by animals that have shells

• phytoplankton use it

• it runs off from the shore when erosion takes place