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Write some examples of indicator species.

Important Questions on Ecology

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Science>Biology>Ecology>Human Influences on the Environment
_____ gases make sure the earth 's temperature remains constant. 
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Science>Biology>Ecology>Human Influences on the Environment

The gas released from landfill is _____(methane/helium).

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Science>Biology>Ecology>Human Influences on the Environment
Contamination of atmosphere causes _____ pollution.
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Science>Biology>Ecology>Human Influences on the Environment

Fill in the blanks by selecting the correct choice from the words given with brackets:

Exhaust gases from vehicles contain _____. (Sulphur dioxide/Carbon monoxide)

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Science>Biology>Ecology>Human Influences on the Environment
_____ gas is released from landfills. (Oxygen/Methane)
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Science>Biology>Ecology>Human Influences on the Environment
Gradual increase in temperature of the earth’s surface and lower atmosphere is called _____.
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Science>Biology>Ecology>Human Influences on the Environment
Higher concentration of _____ causes greenhouse effect. (hydrogen chloride, carbon dioxide)
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Science>Biology>Ecology>Human Influences on the Environment
Soil erosion, floods, wildlife becoming sparse are all associated with _____. (silviculture/ deforestation/ afforestation)
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Science>Biology>Ecology>Human Influences on the Environment
Choose the correct option:
Gases, smoke, fumes, and dust are _____ pollutants. (air/water)
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Science>Biology>Ecology>Human Influences on the Environment

Human activities and vehicles are the main cause of _____ pollution.

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Science>Biology>Ecology>Human Influences on the Environment

Fill in the blanks by selecting the correct choice from the words given with brackets:

The major greenhouse gas is _____. (Carbon dioxide/methane).

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Science>Biology>Ecology>Human Influences on the Environment
By controlling the amount of _____, forests prevent global warming.
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Science>Biology>Ecology>Human Influences on the Environment
Carbon dioxide and methane are _____ gases.
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Science>Biology>Ecology>Human Influences on the Environment
Substances such as plastics in garbage do not rot. They permanently stay in the soil and pollute it. Such substances are known as  _____ substances. (biodegradable / non-biodegradable)
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Science>Biology>Ecology>Human Influences on the Environment

Fill in the blank using the word given in the box. 

Pollutants Methane Plastic Cold weather Fertilisers

_____ is a greenhouse gas.

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Science>Biology>Ecology>Human Influences on the Environment

Choose the right word from the given options:

Drinking water must be _____ (pure\sweet).

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Science>Biology>Ecology>Human Influences on the Environment
Carbon dioxide, which is released when fuels are burned, is a _____ gas.
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Science>Biology>Ecology>Human Influences on the Environment

Choose the suitable word from the bracket and fill in the blank.

Water that is fit for drinking is called _____. (potable water/ non-potable water)

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Science>Biology>Ecology>Human Influences on the Environment

Choose the correct word from the following:
(Smoke, Air, Oxygen)
_____ comes from factories, chimneys and fires.

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Science>Biology>Ecology>Human Influences on the Environment
Natural decomposers cannot break down _____ waste. (biodegradable / non-biodegradable)