Human Impact on the Water Cycle Through Deforestation Urbanization and Agriculture

The video explores the three major human activities impacting the water cycle: deforestation, urbanization, and agriculture. Deforestation leads to increased runoff and loss of biodiversity. Urbanization affects water percolation, runoff, and pollution levels. Agriculture consumes significant water resources and contributes to pollution through runoff. The video also discusses feedback loops and sustainable practices to mitigate these impacts.

Which of the following is NOT one of the three main human activities impacting the water cycle discussed in the video?

• Deforestation

• Urbanization

• Industrialization

• Agriculture

What is a major consequence of deforestation on the water cycle?

• Increased river sediment

• Increased biodiversity

• Decreased runoff

• Increased infiltration

How does deforestation affect biodiversity in rivers?

• It enhances food availability

• It leads to a cloudy environment

• It creates clearer water

• It increases fish population

What characterizes a positive feedback loop in environmental systems?

• It reverses the direction of change

• It stabilizes the system

• It leads to a decrease in variables

• It amplifies changes in the system

In the context of urbanization, what happens to water percolation?

• It increases significantly

• It remains unchanged

• It decreases

• It becomes more efficient

Which of the following is a sustainable drainage practice for urban areas?

• Reducing green spaces

• Building more skyscrapers

• Implementing green roofs

• Increasing concrete surfaces

Which agricultural product requires the most water for production?

• Corn

• Wheat

• Rice

• Beef

What is a benefit of using drip irrigation in agriculture?

• Increases water usage

• Reduces water waste

• Enhances soil erosion

• Increases pesticide use

How can farmers reduce pollution from pesticides?

• Spraying during rain

• Using more fertilizers

• Applying natural predators

• Increasing pesticide concentration

What is a consequence of agricultural runoff entering waterways?

• Increased fish populations

• Improved water quality

• Eutrophication

• Decreased nitrate levels