Question

three ways by which the atmosphere protects the earth from harmful conditions​

Answer 1

1. The atmosphere blocks out harmful rays from the sun. The ozone layer, which lies in the stratosphere 11 to 50 kilometers from the Earth's surface, blocks out many harmful forms of radiation. Without the ozone layer, ultraviolet rays would destroy most life on Earth. Gases in the atmosphere also hold in heat.
2. The Earth's atmosphere contains water. As water evaporates or is given off by living organisms (respiration in animals, transpiration in plants), it rises through the atmosphere and forms clouds. Wind moves the clouds over the surface of the planet. When the clouds condense into rain, snow or other forms of precipitation, the water falls on the surface of the Earth. In this way, the atmosphere regulates the balance of water on Earth and delivers precipitation to areas that otherwise would not have water.
3. The atmosphere contains a large amount of nitrogen. Some plants take nitrogen straight from the air and use it to build nutrients needed for growth. Atmospheric wind erodes land so it can be broken down to form life-sustaining soil.

Answer 2

Answer:

Ozone layer:-

• The atmosphere has ozone layer which prevents earth from the  harmful rays from the sun. The ozone layer lies in 11 to 50 Km from the Earth's surface in the  the stratosphere.
• Life cannot be possible on earth without the ozone layer.  The ultraviolet rays coming from sun would destroy most life on Earth.

Regulates the balance of water:-

• The water evaporates or is given off by living organism, it rises through the atmosphere and creates clouds. With the help of wind, these clouds move over the surface of the planet.
• When the clouds condense into rain, the water falls on the surface of the Earth. That's how, the atmosphere maintains the balance of water on earth. This process gives precipitation to those areas that otherwise will have shortage of water.

Nitrogen for plants:-

• The atmosphere contains enough nitrogen. Some plants able to take nitrogen directly from the air and use it to form nutrients which needed for growth. Wind corrodes the land so it can be broken down to create life-sustaining soil.

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