Nutrient Cycling Quiz

What is nutrient cycling?

• The movement of nutrients from the environment into organisms and back into the environment
• The process of converting nutrients into energy
• The breakdown of organic matter into nutrients
• The absorption of nutrients by plants

Which of the following is NOT a well-known nutrient cycle?

• Nitrogen cycle
• Carbon cycle
• Water cycle
• Oxygen cycle

What is the major building block of all organic matter?

• Nitrogen
• Carbon
• Water
• Oxygen

What is the role of carbon in maintaining the atmosphere?

• It helps to purify the atmosphere
• It helps to maintain the atmospheric level of carbon dioxide
• It helps to replenish soil nutrients
• It helps in the process of photosynthesis

Which process removes oxygen from the atmosphere?

• Photosynthesis
• Respiration
• Decomposition
• Combustion

What is the result of an increase in the combustion of fuel, respiration, and decay?

• Decrease in atmospheric oxygen level and increase in atmospheric carbon dioxide level
• Increase in atmospheric oxygen level and decrease in atmospheric carbon dioxide level
• Increase in atmospheric oxygen level and increase in atmospheric carbon dioxide level
• Decrease in atmospheric oxygen level and decrease in atmospheric carbon dioxide level

What is the effect of a slight increase in atmospheric carbon dioxide?

• Decrease in atmospheric temperature
• Increase in atmospheric temperature
• No significant effect on the atmosphere
• Increase in atmospheric oxygen level

What is the term for the increase in the retention of the sun's radiant energy due to an increase in atmospheric carbon dioxide?

• Greenhouse effect
• Photosynthesis
• Decomposition
• Respiration

What is the process by which plants use carbon dioxide to manufacture their food?

• Respiration
• Decomposition
• Combustion
• Photosynthesis

What is the consequence of a decrease in the atmospheric oxygen level?

• No significant effect on the atmosphere
• Increase in atmospheric temperature
• Decrease in atmospheric temperature
• Increase in the combustion of fuel