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CBSE Notes 2011-2012 » X-Science-Term2

Our Environment

Which one of the following is an artificial ecosystem ?

Multiple choice question

Which one of the following is an artificial ecosystem ?

Ultraviolet radiation from sunlight causes a reaction which produces

Multiple choice question

Ultraviolet radiation from sunlight causes a reaction which
produces

In a food chain, the third trophic level is always occupicd by

Multiple choice question

In a food chain, the third trophic level is always occupicd by

Which rays strike on earth due to depletion of ozone layer ?

Multiple choice question

Which rays strike on earth due to depletion of ozone
layer ?

What is the environmentally friendly way to dispose of used tires ?

Multiple choice question

What is the environmentally friendly way to dispose of
used tires ?

Burning of waste substances usually at high temperature of over 1000

Multiple choice question

Burning of waste substances usually at high temperature
of over 1000

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