To increase the percentage of oxygen in the atmosphere:

plant more trees

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kill all living beings

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cut down trees

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protect animal life

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Solution

The correct option is A plant more trees
Planting more trees directly increases the oxygen amount by the process of photosynthesis in which oxygen is formed and releases into the atmosphere which in turn increases the percentage of oxygen in the atmosphere.
Hence the option A is correct.

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Similar questions

Q. Assertion :Respiration in animals is more affected than in green plants by the increasing effects of air pollution and decreasing oxygen content in the inhaled air. Reason: The source of oxygen for respiration in green plants is atmospheric air and oxygen from photosynthesis.

An increase in the percentage of gases such as carbon dioxide, methane, nitrous oxide traps more heat in the atmosphere leading to __ .

Question 23
An increase in carbon dioxide content in the atmosphere would not cause

(a) more heat to be retained by the environment
(b) increase in photosynthesis in plants
(c) global warming
(d) abundance of desert plants

All living plants and animals need ________ for their growth as it is an important constituent of proteins.

Q. The percentage of oxygen in the atmosphere is _________.

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To increase the percentage of oxygen in the atmosphere:

The correct option is A plant more treesPlanting more trees directly increases the oxygen amount by the process of photosynthesis in which oxygen is formed and releases into the atmosphere which in turn increases the percentage of oxygen in the atmosphere.Hence the option A is correct.

The correct option is A plant more trees
Planting more trees directly increases the oxygen amount by the process of photosynthesis in which oxygen is formed and releases into the atmosphere which in turn increases the percentage of oxygen in the atmosphere.
Hence the option A is correct.