Test Preparation on Environmental Issues - Biology Test Series for NEET - 2020

Which of the following strategy is not a correct approach to
reduce global warming
(a) Reducing the green house gas emission by limiting the
use of fossil fuels
(b) Increase the vegetation cover particularly the forest for
photosynthetic utilization of CO₂
(c) Minimizing the use of nitrogen fertilizers in agriculture
for reducing N₂O emission
(d) Increasing the use of air conditioners, refrigeration unit
and production of plastic foams and propellants in
aerosal spray cans

Steps taken by the Government of India to control air
pollution include

Biochemical Oxygen Demand (BOD) in a river water

Which of the following protocols did aim for reducing
emission of chloroflurocarbons into the atmosphere

DDT residues are rapidly passed through food chain causing
biomagnification because DDT is

World Summit on sustainable Development (2002) was held
in

A lake near a village suffered heavy mortally of fishes within
a few days. Consider the following reasons for this
(A) Lots of urea and phosphate fertilizer were used in the
crops in the vicinity
(B) The area was sprayed with DDT by an aircraft
(C) The lake water turned green and stinky
(D) Phytoplankton populations in the lake declined intially
thereby greatly reducing photosynthesis
Which two of the above were the main causes of fish
mortality in the lake

It is estimated that out of the total global warming the
relative contribution of CO2 ,CH4 ,CFCs 2 4 and N₂O  are
found respectively as