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प्रश्न
Oxygen is returned to the atmosphere mainly by
विकल्प
burning of fossil fuel
respiration
photosynthesis
fungi
उत्तर
photosynthesis
Explanation:
Agents in other options return carbon dioxide to the atmosphere.
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संबंधित प्रश्न
What do you do in the following situations:
Get turbid drinking water during monsoon.
Study the picture given below and answer the following questions :
State one measure to control this pollution.
Give an account of various sources and harmful effects of water pollution.
Which one of the following is a "dirty" practice contributing to pollution and seriously needs stoppage by educating public?
Sewage is a liquid waste from ______.
What are the common sources of oil spills?
Give a reason why :
Polluted water causes disease.
We should save water.
Give few steps to save water.
Define the following term:
Oil spills
