Multiple choice general knowledge science & technology

The carbon dioxide level increases in the atmosphere because

  1. lots of industries have come up recently

  2. water pollution has increased

  3. The existing forest area is not sufficient to absorb the gas

  4. too many people are exhaling the gas
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Forests absorb CO2 through photosynthesis. When forest area is insufficient, CO2 accumulates in the atmosphere. This is the most direct causal link among options. Industries contribute CO2 but the question asks about mechanism of increase.

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