Environmental Science Unit 4: Land Use & Human Impact 4. 4 I can explain the benefits and environmental impacts of pesticide and fertilizer use.
Add nutrients, like nitrogen and phosphorus, to the soil.
Make crops resistant to harmful bugs.
Provide a rich water supply to the crops.
Kill unwanted organisms that destroy crops.
Add nutrients, like nitrogen and phosphorus, to the soil.
Make crops resistant to harmful bugs.
Provide a rich water supply to the crops.
Kill unwanted organisms that destroy crops.
They can pollute waterways.
They can threaten human health.
They can pollute the air.
They can lead to the evolution of pest resistance.
The use of chemical fertilizers has increased soil fertility and increased crop yields.
Compost is a type of natural fertilizer made from decamped organic waste.
The use of fertilizer builds up resistance in harmful pests.
Using too much fertilizer can pollute waterways and lead to algae-blooms.
Pests learn to fight off the effects of pesticide.
Pests learn to avoid plants with pesticide on them.
Pests with a natural resistance to the pesticide survive and reproduce, producing more resistant pests in the next generation.
The chemicals in pesticides lose their effectiveness after they leave the pesticide factory.
Compost
Biological pest control
Monoculture
Pulling weeds by hand
Genetically Modified Crops
Chemical pesticides
Chemical fertilizers
Machinery
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