EVERYDAY SCIENCE

Detailed explanation-1: -Without atmosphere life would not be possible as atmosphere protects us from harmful gases. We could not live without air present in atmosphere. In absence of the atmosphere, the earth would get so cold at night that we would not be able to survive. No CO2 and N2 for plants without atmosphere.

Detailed explanation-2: -Without it, life as we know it wouldn’t exist. Not only does it contain the oxygen we need to live, but it also protects us from harmful ultraviolet solar radiation. It creates the pressure without which liquid water couldn’t exist on our planet’s surface.

Detailed explanation-3: -If you sucked away the entire atmosphere, most higher vertebrates (including humans) would asphyxiate in seconds. Other land animals would follow within a few minutes, plants within a few hours. Meanwhile, the sudden drop in pressure would have a curious effect on the seas.

Detailed explanation-4: -It acts as a blanket and keeps the average temperature of the Earth. It contains all the gases which are essential for sustaining life on the Earth. Ozone layer present in the atmosphere prevents harmful UV rays from reaching the Earth.

Detailed explanation-5: -"It seems just about anywhere we sample with NASA aircraft and balloons, we find signatures of microbial life.” So far, life in Earth’s atmosphere seems to be strictly microbial and a temporary affair, intimately connected to life on Earth’s surface rather than an independent ecosystem.