NEET BIOLOGY

ECOLOGY

ORGANISMS AND THE ENVIRONMENT

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How do landfills effect the environment?
A
Landfills cause fish to be poisoned and die.
B
Landfills support plant growth and healthy soil.
C
Landfills cause smog in the air.
D
Landfills cause chemicals from trash to absorb into the soil and harm plants.
Explanation: 

Detailed explanation-1: -When the waste is dumped in landfill the harmful chemicals and toxins from the landfills slowly gets into the ground and mix to the underground water table. The ground water gets contaminated in this process. This is then absorbed by the roots of the plants and trees causing harm to their growth.

Detailed explanation-2: -Environmental Impact of Landfills Along with methane, landfills also produce carbon dioxide and water vapor, and trace amounts of oxygen, nitrogen, hydrogen, and non methane organic compounds. These gases can also contribute to climate change and create smog if left uncontrolled.

Detailed explanation-3: -One of the most important sources of pollution in landfills is the leachate that is generated by the decomposition of waste. Leachate can penetrate into the soil and water resources, contaminate them, and can affect human life.

Detailed explanation-4: -Landfill effect wildlife landfills create leachate. Landfills affect human health. Landfills still emit landfill gases. Landfills have huge potential for groundwater pollution.

Detailed explanation-5: -The theory behind landfills is that once waste is buried, the contamination remains inert in landfill “cells.” To keep the waste dry and contained, landfill cells today are required to have two plastic liners, each backed with synthetic clay, putting a few inches between decomposing trash and the soil beneath it.

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