Environmental Science
The occurrence of pesticides like DDT in higher trophic levels is termed as

biomagnification
bioremediation
biological enhancement
biopollution

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Environmental Science
MoEF means

Ministry of Fuel and Energy
Ministry of Forest and Energy
Management of Environment and Forestry
Ministry of Environment and Forests

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Environmental Science
Although the polar regions radiate away more heat energy than they receive by insolation in the course of a year, they are prevented from becoming progressively colder each year by the:

Conduction of heat through the interior of the earth
Release of latent heat to the atmosphere when polar ice melts
Circulation of heat by the atmosphere and oceans
The insulating properties of snow
Concentration of earth's magnetic field lines at the poles

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Environmental Science
Which of the following is not a reason why water warms and cools much more slowly than land?

It takes more heat to raise the temperature of a given amount of soil 1oC than it does to raise the temperature of water 1oC
Heat energy is mixed in a deeper layer of water
Water has a higher heat capacity
A portion of the solar energy that strikes water is used to evaporate it
Solar energy penetrates more deeply into water

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