What is greenhouse effect? State its importance for us.

The greenhouse effect is the natural process by which Earth’s atmosphere traps heat from the sun, keeping the planet warm enough for life.The Earth receives energy from the sun. Some of this energy is absorbed, while some is reflected back into space. The greenhouse effect ensures that enough heat remains trapped in the atmosphere to keep Earth’s temperature stable.

How Greenhouse Effect Works

• Sunlight reaches Earth’s surface and warms it.
• The Earth radiates heat back as infrared radiation.
• Greenhouse gases like CO₂, methane (CH₄), and water vapor trap this heat.
• This keeps the planet warmer than it would be otherwise.

Importance of Greenhouse Effect

• Keeps Earth Warm: Without it, Earth’s average temperature would be -18°C instead of 15°C.
• Supports Life: Warmth allows water to remain liquid and supports plants, animals, and humans.
• Maintains Climate: Plays a key role in weather and climate regulation.

Greenhouse Effect vs Global Warming