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What are the environmental consequences of slash and burn agriculture?
Deforestation, soil erosion, and air pollution.
What are the environmental consequences of tilling?
Soil erosion, loss of nutrients, disrupted soil microbes.
What are the environmental consequences of fertilizer use?
Eutrophication, dead zones, water contamination.
What are the environmental consequences of pesticide use?
Harm to non-target species, pesticide resistance, human health issues.
What is the effect of soil erosion on waterways?
Increased sedimentation, which can harm aquatic ecosystems.
What is the effect of algal blooms on aquatic life?
Depletion of oxygen, leading to the death of aquatic organisms.
What is the impact of deforestation on biodiversity?
Loss of habitat and reduced biodiversity.
What is the effect of pesticide use on human health?
Can cause cancer, birth defects, and neurological problems.
What is the effect of tillage on carbon sequestration?
Reduced carbon sequestration in soil.
What is the effect of fertilizer runoff on water quality?
Contamination of drinking water sources.
Why is agriculture a major driver of environmental change?
It involves large-scale land use, resource consumption, and pollution.
Why is slash and burn agriculture not sustainable?
It leads to deforestation, soil erosion, and air pollution.
What is the purpose of tilling?
To improve soil aeration and make it easier for roots to grow.
Why is soil erosion a major environmental concern?
It leads to loss of fertile topsoil, sedimentation in waterways, and land degradation.
Explain the difference between synthetic and organic fertilizers.
Synthetic fertilizers are made industrially, while organic fertilizers are derived from natural sources.
What is pesticide resistance?
Pests evolve to withstand pesticides, requiring stronger applications.
Why are dead zones a concern?
They lead to the death of aquatic life due to oxygen depletion.
What is integrated pest management (IPM)?
A combination of methods to control pests while minimizing pesticide use.
Why is crop rotation beneficial?
Helps maintain soil fertility and reduces pest problems.
What is the importance of sustainable agriculture?
To minimize environmental harm while ensuring food production.
What are the steps of eutrophication?
Excess nutrients runoff, algal blooms occur, algae die and decompose, oxygen depletion, aquatic life dies.
How does pesticide resistance develop?
Initial pesticide application, some pests survive, survivors reproduce, subsequent applications less effective, resistance spreads.