Give 2 reasons to explain why the atmosphere is important?

Answer 1

Atmosphere

The Earth has an atmosphere, consisting mostly of nitrogen (78%), oxygen (21%) and a number of greenhouse gases, which affect the balance of light and ultraviolet energy coming from the Sun and heat energy leaving the Earth, the global energy balance. The greenhouse gases, including carbon dioxide, methane, nitrous oxide and water vapour, absorb energy at some wavelengths of the electromagnetic spectrum, but allow energy at other wavelengths to pass through unimpeded. Shorter wavelength sunlight passes through the atmosphere relatively unimpeded, although the ozone layer does absorb a lot of higher wavelength ultraviolet energy. This heats up the Earth's surface, causing it to re-release energy back to the atmosphere. The lower wavelength heat (or infrared) energy given off by the Earth, however, is mostly trapped (absorbed) by the greenhouse gases, and is prevented from escaping directly back into space. This trapped heat warms the Earth's surface on average by as much as 33°C. The process is called the natural greenhouse effect, and without it, the Earth would be as cold as the moon, about -18°C.

The atmosphere also contains millions of microscopic particles called aerosols, which scatter sunlight. The scattering of sunlight by the atmosphere is important because like the natural greenhouse effect, this can affect the amount of energy stored in the atmosphere, and therefore the Earth's climate.

Changes in the composition of the atmosphere can be a mechanism of climate change. A change in the greenhouse gas content of the atmosphere will affect the amount of energy stored in the atmosphere. For example, if the amount of carbon dioxide in the atmosphere is increased, more heat will be trapped in the atmosphere. This enhanced greenhouse effect raises the Earth's surface temperature. Changes in the amount of greenhouse gases in the atmosphere can occur in numerous ways. Natural changes in the amount of carbon dioxide stored in the atmosphere occurred at the end of the last Ice Age. A 50% increase in carbon dioxide levels coincided with a 5°C rise in global average surface temperature. Today, mankind through the burning of fossil fuels for energy and transportation, and changing land use, has produced a substantial change in the atmospheric composition over most recent centuries, and it is feared that this continuing change will lead to global warming.

Answer 2

a million. particular gases, even as extreme contained in the ambience catch warmth on the earth equivalent to how a sparkling roof on a eco-friendly living house accumulates warmth. we've on concept what all gases are in touch and that are maximum significant, yet CO2 is an basic one to blame it on.

Answer 3

1. Do you like to breath?
2. Do you like solar radiation.

Answer 4

atmosphere reflects many harmful rays, provides green house effect and saves us from UV rays.

Answer 5

1. We can breathe it
2. It protects us from being baked by the sun or frozen by space at night

Answer 6

"atmospere" furnishes animal and plant life air to breath,
and it furnishes "atmosheric pressure " that keeps things in place on the planet, so to speak.

Answer 7

1) to live safely
2) to protect overselves from radiations and disease's

Answer 8

1. without it we'd all suffocate (see the movie "spaceballs" for proof)
2. without it paper planes wouldn't work and god knows we'd be lost without THOSE

Answer 9

Breathe in.

Breathe out.

That's why.

Answer 10

life, water