EVERYDAY SCIENCE

SCIENCE

RESPIRATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How will clear-cutting of forests affect the level of carbon dioxide in the atmosphere?
A
It will decrease because of increased respiration.
B
It will increase because of decreased photosynthesis.
C
It will decrease because of decreased photosynthesis.
D
It will remain constant as respiring animals remove the carbon dioxide.
Explanation: 

Detailed explanation-1: -Plants need carbon dioxide for photosynthesis. Fewer trees would mean that less carbon dioxide will be used up resulting in its increased amount in the atmosphere. This will lead to global warming as carbon dioxide traps the heat rays reflected by the earth.

Detailed explanation-2: -When forests are cut down, much of that stored carbon is released into the atmosphere again as carbon dioxide (CO2). This is how deforestation and forest degradation contribute to global warming.

Detailed explanation-3: -Deforestation can result in more carbon dioxide being released into the atmosphere. That is because trees take in carbon dioxide from the air for photosynthesis, and carbon is locked chemically in their wood. When trees are burned, this carbon returns to the atmosphere as carbon dioxide.

Detailed explanation-4: -Deforestation refers to the purposeful clearing or thinning of trees and forests. When deforestation occurs, much of the carbon stored by trees is released back into the atmosphere as carbon dioxide, which contributes to climate change.

Detailed explanation-5: -Undisturbed forests absorb and store more carbon via photosynthesis than they release via cell respiration. Trees that have been cut down no longer absorb CO2 from the atmosphere via photosynthesis. Trees that are burned release CO2 to the atmosphere via combustion.

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