Question

Greenhouse effect is ___________.

• A. Increase in animal population on Earth
• B. A natural process that warms the Earth's surface
• C. Gradual warming of the Milky Way Galaxy
• D. Building up of pollution in the atmosphere

Answer 1

Answer: (B)

A natural process that warms the Earth's surface

• The greenhouse effect is a natural process that warms the Earth's surface.
• When the Sun's energy reaches the Earth's atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases.
• The absorbed energy warms the atmosphere and the surface of the Earth.