It depends on your definition of 'life'. To sustain life as we know it, you need oxygen, warmth, food, liquid water and an ecosystem that self perpetuates enough oxygen and other gasses in order for life to survive.
HOWEVER - There's nothing to say that life couldn't exist in other forms throughout the universe !
There must be water in order for any life to exist on this planet.
Would life exist on what planet? Earth? Mars? Yes, even if not human, trees and plant vegitation
In a scientific point of view certain criteria must be sustained in order for life to exist, it must be able to sustain human life in size and also have the right chemical composition of gas like oxygen, also it must contain water in order for us to survive and desirably some sources of food, without these we would die, it may be possible in some planet for life to exist but we do not know about it yet, so life COULD exist on another planet, it just needs to stick to this criteria and many planets don't so that is why life is less likely. Do not copy if neeeded for homework. It is copyright
Earth is currently the only planet where it is known that beings can exist. However in my opinion the universe is so unthinkably huge that there must be another planet where there are the right conditions for life.
Water
Yes
Earth is the only planet in the solar system where life is known to exist. It has a unique combination of conditions, such as liquid water, a stable atmosphere, and a suitable temperature range, that support the diverse forms of life found on our planet.
planet earth
yes
elth olay has it
It is generally called as biosphere
To sustain life, a planet must have oxygen and a variety of gases, plant life, strong enough gravity and enough clean water.