HARD
Earn 100

Which of the following is/are not greenhouse gas/es?

50% studentsanswered this correctly

Important Questions on Environmental Issues

MEDIUM
Biology>Ecology>Environmental Issues>Ozone Depletion
One student makes a kaleidoscope using pieces of coloured glass. Which 'R' he has used to protect the environment? 
EASY
Biology>Ecology>Environmental Issues>Ozone Depletion

How will you reuse the waste water in your houses?

MEDIUM
Biology>Ecology>Environmental Issues>Ozone Depletion
To save the environment you have come across the words ''Reuse'' and ''Recycle''. What do they refer to?
MEDIUM
Biology>Ecology>Environmental Issues>Ozone Depletion
Explain with three points how recycling waste materials help in maintaining ecological balance.
MEDIUM
Biology>Ecology>Environmental Issues>Ozone Depletion
 “A lot of indiscriminate activities of humans pollute the environment”- Support the statement by giving three examples in favour of it. Give examples of a national park and a biosphere reserve in West Bengal.
MEDIUM
Biology>Ecology>Environmental Issues>Ozone Depletion
An environmentalist on a visit to your school suggested various methods to save the environment.
a) What does the term ‘Reduce’ refer to?
b) List any two advantages of water harvesting.
MEDIUM
Biology>Ecology>Environmental Issues>Ozone Depletion
Name the group of bacteria, found in human intestines, whose presence in water indicates contamination by diseases causing microorganisms?
EASY
Biology>Ecology>Environmental Issues>Ozone Depletion
Everyone of us can do something to reduce our consumption of various natural resources. List any two such activities based on the 3-R approach. 
EASY
Biology>Ecology>Environmental Issues>Ozone Depletion
Among the following, the one that is not a greenhouse gas is:
MEDIUM
Biology>Ecology>Environmental Issues>Ozone Depletion

Give the biological reasons for the following statement:

Water pollution is a major cause of concern in our country.

EASY
Biology>Ecology>Environmental Issues>Ozone Depletion
The following very short answer type question of 2 marks may be answered in a few words or few sentences or as may be required:
Why is better to 'Re-use' the things?
EASY
Biology>Ecology>Environmental Issues>Ozone Depletion
Which of the following greenhouse gases has the maximum contribution towards global warming?
MEDIUM
Biology>Ecology>Environmental Issues>Ozone Depletion

What do you mean by the three R's to save the environment? Write in brief.

MEDIUM
Biology>Ecology>Environmental Issues>Ozone Depletion
Use of solar energy operated devices instead of LPG for preparation of food is an example of:
MEDIUM
Biology>Ecology>Environmental Issues>Ozone Depletion
Mention any three adverse effects of fishing with chemicals.
EASY
Biology>Ecology>Environmental Issues>Ozone Depletion
The presence of following kind of bacteria in water indicates contamination by disease causing micro-organisms
EASY
Biology>Ecology>Environmental Issues>Ozone Depletion
The three R’s to save the environment are
HARD
Biology>Ecology>Environmental Issues>Ozone Depletion
What is the importance of reduce, recycle and reuse to save the environment? What changes can you make in your habits to become more environment-friendly?
EASY
Biology>Ecology>Environmental Issues>Ozone Depletion
Which radiation coming from the sun, is prevented by the Ozone layer from falling on the earth’s surface?
EASY
Biology>Ecology>Environmental Issues>Ozone Depletion
Which among the following gases absorb long wavelength infrared radiation emitted from the earth’s surface?