Short Q/A Q1. How do all living beings depend on the atmosphere for their survival? Q2. Which is most important layer of the atmosphere? Q3. Briefly write about thermosphere. Q4. Define the term atmosphere. Q5. What is global warming? What is its affect? Q6. How is nitrogen present in atmosphere used by plants?
Answers
Answer:
Q.1 All living beings depend on the atmosphere for their survival. Atmosphere provides them the air they breathe. It protects them from the harmful effects of the sun's rays. Without its protection, they would be baked alive by the heat of the sun during day and get frozen during night.
Q.2Troposphere is regarded as the most important layer of atmosphere. It is the lowermost layer of the atmosphere and contains 75% of all air in the atmosphere. Most clouds occur in this layer because 99% of the water vapour in the atmosphere is found here.
Q.3The thermosphere is a layer of Earth's atmosphere that is directly above the mesosphere and below the exosphere. It extends from about 90 km (56 miles) to between 500 and 1,000 km (311 to 621 miles) above our planet. ... Solar activity strongly influences temperature in the thermosphere.
Q.4The envelope of gases surrounding the earth or another planet.
Q.5Global warming, the gradual heating of Earth's surface, oceans and atmosphere, is caused by human activity, primarily the burning of fossil fuels that pump carbon dioxide (CO2), methane and other greenhouse gases into the atmosphere
Q.6To be used by plants, the N2 must be transformed through a process called nitrogen fixation. Fixation converts nitrogen in the atmosphere into forms that plants can absorb through their root systems.
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Please Mark BRAINLIEST
let me put it in more simple way for those who want jist of it than the guy above who has explained neatly and elaborately
Explanation:
Q1 atmosphere protects us from harmful uv rays and other rays which may coz skin cancer
Q2 troposphere
Q3 it has ions which reflect back the radio waves
Q4 a blanket of air
Q5 rise in temperature by green house gases .melting of ice and increase in water level may coz floods
Q6 in form of gas it goes through nitrogen fixation and then absorbed by bacteria called rhizobium present in root nodules of plant and then it converts nitrogen in air to ammonia