Question

What would have happened if greenhouse gases were totally missing in the earth’s atmosphere? Discuss.

Answer 1

Hint: Greenhouse gas absorbs and emits infrared radiation. They absorb emitted heat energy from the earth’s surface and re-emit back to the earth’s surface.

 Complete step by step answer:
Greenhouse effect is a natural process due to which the Earth’s surface warms. Water vapour, carbon dioxide, methane, ozone, CFC, etc are responsible for greenhouse effects. The environment is heated because of these gases. Such gases are therefore important for sustaining the earth's temperature to survive. In the absence of greenhouse gases, the global earth temperature would fall drastically. Because of this life on earth won't be possible.

Additional Information:
Inside the greenhouse, the sun's radiation warms the plants and the air. The heat trapped within can not exit and warms the greenhouse that is required for growing plants.
The same is the case in the atmosphere on earth. The sun heats up the earth's atmosphere throughout the day. When the planet cools off the sun at night it emits heat into the atmosphere. The heat is absorbed by the greenhouse gases in the earth's atmosphere during this process. This is what makes the earth's surface hotter, which makes it possible for living beings to live on earth.

Note:
Remember that the greenhouse effect is caused due to the greenhouse gases. It happens when the Earth’s atmosphere becomes thick with an excess amount of gases due to which the sun’s radiation is trapped and the Earth becomes warmer.