Practice: APES land and water use

Definition of sustainable agriculture

Agricultural practices that meet current food needs without compromising future generations' ability to do the same.

Question: What does irrigation do?

Provides water to crops through controlled methods, enhancing agricultural productivity.

True or false: Desertification increases agricultural productivity.

False, because it leads to loss of arable land and decreased crop yields.

Difference between point source and non-point source pollution

Point source pollution comes from a single identifiable source, while non-point source pollution comes from multiple, diffuse sources.

Fill in the blank: The ____ of land refers to its ability to support vegetation.

fertility

What is aquifer depletion?

The reduction of water levels in aquifers due to excessive extraction, which can lead to shortages.

Question: What is the primary goal of land use planning?

To manage land resources effectively for sustainable development.

True or false: Urbanization can lead to increased water runoff.

True, because impervious surfaces prevent water absorption by soil.

What is gray water?

Reused water from sinks, showers, and laundry, suitable for irrigation.

Question: What are the main causes of deforestation?

Agriculture, logging, and urban development.

True or false: Crop rotation improves soil health.

True, because it diversifies nutrient use and reduces pest buildup.

What is the purpose of a watershed?

To collect and drain water from rain and snowmelt into a common outlet.

Question: What is the impact of overgrazing?

Leads to soil degradation, erosion, and loss of plant species.

Fill in the blank: The maximum amount of water a soil can retain is called its ____ capacity.

field

Difference between organic and conventional farming

Organic farming avoids synthetic fertilizers and pesticides, while conventional farming may use them for increased yield.

Question: Which method minimizes soil erosion?

Contour plowing, which follows the land's contours.

What is the function of wetlands?

They filter pollutants, provide habitat, and help control flooding.

True or false: Water scarcity affects only arid regions.

False, because it can occur in any region due to overuse or pollution.

Question: What contributes to the greenhouse effect?

Greenhouse gases like CO2 trap heat in the atmosphere.