what would happen if there was no greenhouse effect at all?

Answer 1

we would all be dead!

the earth wouild be too cold to live on!

The atmosphere emits radiation for the same reason the Sun does: each has a finite temperature. So, just as one would be warmer by sitting beside two fireplaces than one would have been if one fireplace were extinguished, so, one is warmer by receiving radiation from both the Sun and the atmosphere than one would be if there were no atmosphere.

Curiously, the surface of the Earth receives nearly twice as much energy from the atmosphere as it does from the Sun. Even though the Sun is much hotter, it does not cover nearly as much of the sky as does the atmosphere. A great deal of radiation coming from the direction of the Sun does not add up to as much energy as does the smaller portion of radiation emitted by each portion of the atmosphere but now coming from the whole sky. (It would take about 90,000 Suns to paper over the whole sky).

So, it isn't even as if our atmosphere had only a minor influence on the surface temperature; it has a profound one. In the absence of an atmosphere the Earth would average about 30 Celsius degrees (about 50 Fahrenheit degrees) lower than it does at present. Life (as we now know it) could not exist

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Answer 2

u must clearly understand concepts of radiation(absorption,transmission,reflection)

from sun we receive light radiations..of which a part is reflected bak to space by atmosphere

a part is absorved by atmoshere hence heating it.

some of the light is transmitted through atmospere and reflected again by land and water.

this reflection of heat between land/water and air maintain heat in this planet.if there is no heating
1.weather change would result in death of flora and fauna in equatorial regions.
2.rainfall would become less and agriculture would be affected.

Answer 3

I must see what will effect to us all.