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Question

An increase in carbon dioxide content in the atmosphere would not cause:


A

more heat to be retained by the environment

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B

increase in photosynthesis in plants

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C

global warming

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D

abundance of desert plants

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Solution

The correct option is D

abundance of desert plants


The explanation for the correct option:

(D) Increase in Carbon dioxide(CO2) will not affect the abundance of the desert plants.

The explanation for the incorrect options:

(A) Increase in the Carbon dioxide, greenhouse gas increases the earth's temperature and causes global warming. An increase in carbon dioxide increases photosynthesis.

  • Global warming is defined as a gradual increase in the earth’s temperature generally due to the greenhouse effect caused by increased levels of carbon dioxide, CFCs, and other pollutants.

Three activities promote the release of carbon dioxide in the air.

  • Burning of fossil fuels such as petrol, and diesel uses for transportation and industrial purposes.
  • Burning of wood and charcoal for heating and cooking.
  • Deforestation.

(B) Photosynthesis is a process that uses light energy to convert carbon dioxide and water into glucose and oxygen.

(C) Global warming is defined as a gradual increase in the earth’s temperature generally due to the greenhouse effect caused by increased levels of carbon dioxide, CFCs, and other pollutants.

Three activities promote the release of carbon dioxide into the air.

  • Burning of fossil fuels such as petrol, and diesel uses for transportation and industrial purposes.
  • Burning of wood and charcoal for heating and cooking.
  • Deforestation.

Hence, option (d) is correct.


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