Question

What are the conditions for making life possible on earth?

Answer 1

Life is possible on Earth because of its relative position with respect to the sun that it has an ambient environment and the under-mentioned things become possible:
Breathable oxygen gas presencePresence of an ambient atmosphere that contains just the proportionate amounts of gases that are required for survival of living species. By volume, dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases. Air also contains a variable amount of water vapor, on average around 1% at sea level, and 0.4% over the entire atmosphere.The temperature of the Earth is also habitable; not too low at night and nor too high during the day. The presence of greenhouse gases like carbon di oxide, methane etc. also substantiate to this fact.Presence of water. This in fact is the most obvious thing one would come up with. Fresh water is needed by all for their survival and so that animals can thrive on the Earth.Radiant energy of the sun. Because of the sun's light plants are able to perform photosynthesis and make food for almost all of the living organisms on the planet.There are the most essential elements that make up all the matter in the world and thus make our survival possible. Nitrogen, carbon, oxygen sulphur etc. make up nitrogenous bases, phosphate molecules that make up for all the proteins, nutrients etc.

Answer 2

The conditions are following

1. Water is must be required
2. There is must be the supply of air with oxygen
3. there is must be a fertile land for growing foods for our survival
4. There are must be shelter for living
5. There must be a proper climate