The Importance of Greenhouse Effect for Life on Earth

What is the significance of the greenhouse effect for life on Earth?

A. The greenhouse effect is caused by human activity
B. Life on earth is suffering because of the greenhouse effect
C. Life on Earth wouldn't exist without the greenhouse effect
D. All greenhouse gases are harmful

Answer:

C

Explanation:

The correct statement about the greenhouse effect is option C: Life on Earth wouldn't exist without the greenhouse effect. The greenhouse effect is a natural phenomenon that keeps the Earth warm enough to support life. It occurs when certain gases in the atmosphere trap heat from the sun, preventing it from escaping back into space. Without the greenhouse effect, the Earth would be too cold to sustain life as we know it.

Final Answer:

The greenhouse effect is a natural phenomenon necessary for life on Earth (option C). Human activities have enhanced the greenhouse effect, resulting in negative impacts. Not all greenhouse gases are harmful, but excessive amounts can contribute to climate change.

Explanation:

Greenhouse gases in the air, mainly carbon dioxide, methane, and water vapor, trap radiation from the Sun and act like a thermal blanket around the planet. Without the greenhouse effect, the Earth would have an average temperature of -18°C and be covered in ice. Life as we know it would not be able to survive.

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