Environmental Science
A graphic representation of number of individuals of different species belonging to each trophic level in a an ecosystem is known as

Pyramid of energy
Pyramid of number
Ecological pyramid
Pyramid of biomass

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Environmental Science
The main reason why vegetables take longer to cook in boiling water at high altitudes is because:

The temperature of the boiling water decreases with increasing altitude
There is less oxygen in the air at high altitude
Saturation vapor pressure decreases with increasing altitude
Water boils at a higher temperature with higher altitude

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Environmental Science
What is meant by ex-situ conservation?

Conservation of plants
Conservation of forest eco system
Conservation of a species outside its natural habitat
Conservation of a species by protecting its habitat along with all other species living there

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Environmental Science
Definition of ecosystem is

The abiotic component of a habitat
A community of organisms interacting with one another
The community of organisms together with the environment in which they live
The part of the earth and its atmosphere which inhibits living organisms

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