Question

How is troposphere essential for living organisms

Answer 1

troposphere means land and land is really essential as most of the living organisms live on land only.

Answer 2

Atmospheric pressure at the top of the troposphere (the tropopause) is about a fifth of that at the bottom. Without the troposphere we’d all die of extreme altitude sickness within a matter of days.Most of the greenhouse effect is due to water vapor in the bottom half of the troposphere. Without the troposphere the greenhouse effect would be so much less that the oceans would freeze solid. Those who hadn’t yet succumbed to altitude sickness could try to skate from the US to Spain. The going odds are that few if any would make it.Insects couldn’t fly, resulting in flycatcher-type birds becoming extinct.Flash Gordon’s archnemesis Ming the Merciless (google it) had a weapon on Mars to extract the nitrogen from Earth’s atmosphere. Why nitrogen when removing the oxygen would require less effort with greater effect on life on Earth? Ming may well have had the previous three outcomes in mind. We have devious characters like Ming in high places on Earth today. Where is Flash Gordon when we need him now?