Environmental Science
The presence of solid, liquid or gaseous compounds, which may not be normally present, or in excess concentration in the atmosphere is called

water pollution
radioactive pollution
air pollution
soil pollution

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Environmental Science
Which of the following is false?

The succession that occurs in newly cooled lava is called primary succession
Rate of succession is faster in secondary succession
Quantity of biomass in a trophic level at a particular period is called as standing crop
The energy content in a trophic level is determined is determined by considering a few individuals of a species in that trophic level.
Phytoplanktons are the pioneers in the aquatic ecosystem

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