Solution:
The energy content in a trophic level is determined is determined by considering a few individuals of a species in that trophic level.

Solution:
The greenhouse effect is one of the main factors determining the temperature of a planet. It's the phenomenon by which certain gases – so-called greenhouse gases – in the atmosphere trap heat that would otherwise escape to space, thereby keeping the planet warm.

Solution:
The movement "Pani Panjayath" was initiated to conserve waters in the drought prone areas of Maharashtra state.

Solution:
Water vapour (H2O) is the most abundant greenhouse gas in the earth's atmosphere.

Solution:
Minamata disease is caused by marine pollution.

Solution:
The extent of damage or danger posed to the environment depends upon the radioactive material concentration, the energy emitted by the radiation, proximity of the radioactive materials to those exposes, and the radiation type.

Solution:
While its use is widespread in the English language, Tsunami is actually a Japanese word. The word originates from a conjunction of two words, 'Tsu' and 'Nami'. Tsu translates to 'Harbor' while Nami translates to 'Wave'.