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Environmental Science

Environmental Science
_________ energy is the main driving force of the ecological system.

Solar
Hydro
Electric
Mechanical

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Environmental Science
Ecological niche of an organism represents

All of these
The resource it utilizes
Functional role in the ecological system
The range of conditions that it can tolerate

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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

radioactive pollution
air pollution
soil pollution
water pollution

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Environmental Science
Approximately, 50% of total world species are present on

Temperate rain forest
Temperate deciduous forest
Coral reefs
Tropical rain forest

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Environmental Science
The most important reason for decrease in biodiversity is

Over-exploitation
Habitat destruction
Introduction of exotic species
Habitat pollution

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Environmental Science
The most abundant greenhouse gas in the earth's atmosphere:

Water vapour (H2O)
Nitrous oxide (N2O)
Chlorofluorocarbons (CFCs)
Carbon dioxide (CO2)
Methane (CH4)

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