We would't have anything to eat so couldn't exist.
The temperature on Earth will become so hot that no living animal, human or plant could survive.
If there was no plant life on earth, there would be no human life, or animal life of any kind. Without plants, there would be no autotrophs (organisms that produce their own food) so other organisms, which need to consume food, there would be no food for other organisms. Also, since plants produce oxygen for heterotrophs (organisms that consume food to produce energy), there would be no oxygen for us to breathe and we would suffocate.
Because if the temperature was different human beings would not have evolved.
Would life exist on what planet? Earth? Mars? Yes, even if not human, trees and plant vegitation
we can live on earth because it is not to hot or cold
The human would water and feed the plant by giving it sunlight. However the plant would help the human by giving it the air the body need so we can breath.
Well, Earth is the only planet that could support human life, so we've been faring pretty well here so far.
It would have to be one with a vacume containment suit as there would be no atmosphere to sustain his environment. Actually the term ON earth wouldn't have any particular meaning either as nothing would be able to have an ON relationship with what would remain of the Earth without there being gravity to hold it together.
A Spy The answer would be a Spy.
Heat and pressure would most likely kill a human being before they could reach the center of the earth.
Yes, the water cycle is essential for human and plant life on earth. Without the water cycle there would be no rain, no rivers, no water to drink or to irrigate crops. Life would be very different.
Like any other human being on this earth. Hopefully, that equates to respect and kindness.