Question

what factors allow life to exist

Answer 1

Quite a few, but the three main ones being an abundance of oxygen in the atmosphere and liquid water, which are both essential for life as we know it to exist here on earth. The other is the proper distance from the sun which gives us the right amount of heat energy needed to heat up the planet just enough to maintain water in a liquid form and also gives us sunlight for plants to photosythesize and exist, which in turn take in the carbon dioxide we breath out and turn it into oxygen which we need.

Then there are others such as the amount of gravity, axis tilt of the planet, rotational velocity, and many others I can't remember off the top of my head.

HOPE THIS ANSWER HELPED U!!

Answer 2

1) water in liquid state 2)thick layer of atmosphere and the chemical composition3)oxygen 4) proper distance from the sun 4) nitrogen in atmosphere (for nitrogen fixing in soil by the plants ) 5)ozone layer 6)earths gravitational force 7) moon8) rotation amd revolition around the sun9) earths tilted axis... These are some factors....hope this helped ...pl mark as brainliest