JEE Main 2023 — Environmental Chemistry Question with Solution

The delicate balance of ${\mathrm{CO}}_2$ and ${\mathrm{O}}_2$ is disturbed by the burning of coal (Option A), the burning of petroleum (Option B), and deforestation (Option D). These activities contribute to the increase in atmospheric ${\mathrm{CO}}_2$ levels, which can lead to global warming and climate change.

However, respiration (Option C) does not disturb the delicate balance of ${\mathrm{CO}}_2$ and ${\mathrm{O}}_2$. During respiration, organisms including humans and animals consume ${\mathrm{O}}_2$ and produce ${\mathrm{CO}}_2$ as a byproduct. This ${\mathrm{CO}}_2$ can be utilized by plants during photosynthesis to produce ${\mathrm{O}}_2$, thus maintaining a balance between ${\mathrm{CO}}_2$ and ${\mathrm{O}}_2$ levels in the atmosphere.