Nutrient Cycles

Which process takes Carbon Dioxide from the air and converts it into a form of carbon used by living things?

• Precipitation
• Photosynthesis
• Respiration
• Bioremdiation

When nitrogen gas is turned in to a form that plants and animals can use is called 

• Combustion
• Photosynthesis
• Decomposition
• Nitrogen Fixation

Carbon dioxide is added to the atmosphere by

• Burning fossil fuels 
• Cellular respiration
• Decomposing organic matter
• All answers are correct

The nitrogen found in the atmosphere is not in a form that plants or animals can use.  What converts it into a usable form?

• Bacteria
• Photosynthesis
• Decomposition of organisms
• Fungi

Gases such as carbon dioxide, methane and water vapor trap heat in the Earth's atmosphere causing global warming

• Global warming gases
• Hot house gases
• Greenhouse gases
• Thermal pollution

Organisms use nitrogen to form

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

The energy that drives the water cycle comes from 

• Solar Radiation
• Geothermal Heat
• Water Energy
• Advection

When water leaves a plant through small openings called stomata

• Precipitation
• Condensation
• Transpiration
• Perspiration

Which nutrient is not cycled through the atmosphere?

• carbon
• nitrogen
• phosphorous
• water

Which of the following cycles do humans impact by the runoff of fertilizers, which are responsible for algal blooms, as the algae die and decompose, bacteria use up the oxygen, causing fish kills.

• Carbon and Nitrogen
• Sulfur and Nitrogen
• Nitrogen and Phosphorus
• Sulfur and Phosphorus