Question

question 3
why is the greenhouse effect significant? explain your reasoning.

Explanation:

The greenhouse effect is significant as it regulates Earth's temperature. Greenhouse gases (e.g., CO₂, H₂O vapor) trap some of the sun's heat that would otherwise escape into space, keeping the planet warm enough to support life (average temp ~15°C vs. -18°C without it). However, enhanced greenhouse effect from human activities (fossil fuel burning, deforestation) causes global warming, leading to climate change impacts like sea - level rise, extreme weather, and disrupted ecosystems.

Answer:

The greenhouse effect is significant because it naturally warms the Earth's surface, making the planet habitable (by maintaining a temperature suitable for life, e.g., without it, Earth's average temp would be around - 18°C). However, human - induced enhancement of the greenhouse effect (via increased greenhouse gas emissions) causes global warming, leading to climate change with impacts such as rising sea levels, more extreme weather events, and disrupted ecosystems.