Human Effects of Cycles Quizzizz Act.

How do humans introduce more nitrogen into the water supply?

• Through sewage treatment plants and using fertilizers

• By planting more trees

• Through natural processes like evaporation

• By reducing the use of motor vehicles

What is eutrophication?

• The increase of nitrogen in the soil due to human activity

• The process of planting legumes to fix nitrogen

• The reduction of nitrogen in the atmosphere

• The rapid growth of algae in water that reduces oxygen levels

What contributes to acid rain formation?

• The planting of legumes by farmers

• Deforestation and burning of trees

• The use of fertilizers in agriculture

• Nitrogen and sulfur compounds from industries and vehicles

How do farmers positively affect the nitrogen cycle?

• By rotating crops and planting legumes

• By increasing the use of sewage treatment plants

• By using more fertilizers

• Through deforestation

What is the main cause of carbon dioxide release due to human activity?

• Planting trees

• Nitrogen fixation by legumes

• The use of fossil fuels

• Natural wildfires

How does deforestation contribute to global warming?

• By fixing more nitrogen in the soil

• By increasing the amount of oxygen in the atmosphere

• Through the reduction of carbon dioxide due to photosynthesis

• By releasing carbon dioxide when trees are burned

What percentage of carbon dioxide added to the atmosphere is due to burning trees?

• About 20 percent

• About 80 percent

• More than 50 percent

• Less than 10 percent

How might large scale deforestation affect the water cycle?

• By increasing groundwater levels

• By increasing transpiration

• By shifting precipitation patterns

• By enhancing water purification

What happens when water is overused from an aquifer?

• The water cycle is enhanced

• It leads to an increase in water quality

• The water supply in the aquifer can be depleted

• More trees and plants grow