the global consumption of pesticides was 18.17 lakh tonnes in 1980 which increased up to 45 lakh tonne by 1995

Question

wat is ur opinion regarding the effect on environment of increasing level of pesticides used?????????

Answer 1

Well you have to know that pesticides are sprayed to kill insects that harm your vegetation.. So thats one environmental effect.. destruction of insects by unnatural means..

Then these pesticides have chemicals that could be very very harmful to human health.. So if the agriculturalproducts with pesticides stickin to them are ingested (by not washing properly).. they could enter our body and cause severe health problems (u can look up the net for health effects of pesticides)

The important word ur looking for is BIOMAGNIFICATION.. i think its also called biaccumulation.. Where pesticides washed off to rivers are eaten up by zooplanktons.. a number of infected zooplanktons are eaten by fish.. it keeps passing on to higher levels of the food chain and eventually reaches man in large quantities through the foodchain.. So every organism in ur foodchain has been indirectly affected..


EDIT: Since insects are being killed, their predators have less food to feed on.. hence their population size is forced to decrease as well

this can also be applied to the biomagnification process . when lower organisms in the food chain die.. there is less food for their consumers.. so different species at different levels of the food hain could face shortage of food n die out eventually..

N also, ur synthetic/ manufactured pesticides could have non-biodegradable constituents.. these will always remain as environmental pollutants in the nature because they dont degrage..