A field exposed to excessive pesticide use shows a sharp decline in earthworm population. The resulting effect on soil is:
Reduced soil fertility
Earthworms are vital to soil health — they aerate the soil, mix organic matter, and enhance nutrient cycling.
Heavy or repeated use of pesticides kills earthworms and other soil organisms, leading to:
- Reduced aeration and water infiltration
- Decreased decomposition of organic matter
- Lower nutrient availability for plants
- Overall decline in soil fertility
This is an example of biomagnification — pesticides also accumulate as they move up the food chain.
Similar Questions
The primary method of managing biodegradable domestic waste after collection is _________________.
Biomedical waste handlers in a hospital are at risk of occupational hazards. The most effective way to protect them from exposure to infectious materials is:
The term 'smog' is a combination of ____________.
The pollutant group commonly associated with oil spills in oceans is ______________.
A farmer applies large amounts of chemical fertilizers over several years. Which consequence most likely results from this practice leading to soil pollution?
The primary method of managing biodegradable domestic waste after collection is _________________.
A farmer applies large amounts of chemical fertilizers over several years. Which consequence most likely results from this practice leading to soil pollution?
The pollutant group commonly associated with oil spills in oceans is ______________.
The term 'smog' is a combination of ____________.
Biomedical waste handlers in a hospital are at risk of occupational hazards. The most effective way to protect them from exposure to infectious materials is:
Important Questions from Ecology and Environment
The Imperial Forest Research Institute was set up in 1906 in:
Buxa Tiger Reserve is located in:
Which day is celebrated as the World Environment Day?
Which Indian products are issued with eco - mark?
Degradation of global environment has not resulted in one of the following.
