None that we know about. The planets that orbit our Sun have so far shown no evidence of current or previous lifeforms. But their existence cannot be ruled out until first-hand observations can be made.
as far as we know it is the only planet that has water and life
So far, earth is the only planet known to support life, but many scientists thing that life probably exists on other planets.
Earth
Scientists say that life can be expected to have evolved on other planets, wherever the environment is not so hostile that life can not be supported. They say that in this vast universe there must be many such planets that can support life and that some are likely to support intelligent life forms even more advanced than humans. Whether we believe that our God created the life on other planets is a matter of human faith. No doubt any intelligent life on other planets will never have heard of Earth's gods.
Life probably does not exist on any of the known planets (except earth). But if life does exist on one of those planets, it would probably be on Mars. Venus is way too hot, Mercury does not have an atmosphere, and the other four planets are made up almost entirely of gas.
The Earth has a biosphere, which is the part of the Earth where life exists. This includes all living organisms and their interactions with each other and their environment. Other planets in our solar system do not have a biosphere as they lack the conditions necessary to support life as we know it.
No. There are life forms on Earth that can survive in extreme conditions where humans can't. The environment on Earth when life first emerged would have been toxic to us. If other planets have these conditions then they may support life. The main ingredient scientists believe to be necessary for life is liquid water. Earth is the only planet known to support liquid water on its surface, but we know very little about the planets that exist outside of our solar system. While it is unlikely that life exists on any of the other planets in our solar system, we have no way of knowing with current technology if planets in other solar systems support life.
It has dogs, fish, trees, people, and cars on it.
Earth's scientist have not found life on other planets to date.
No other planet in our solar system could support advanced life such as on Earth. Others could support UNintelligent life. Planets in other galaxies that may support life are: OGLE-2005-BLG-390Lb , Gliese 581 c, and Gliese 581 d.
So far most planets are too hot or too cold to support life or are gas giants. Scientists are yet to find signs of life in other planets, other than planet Earth. The universe has many galaxies and planets, most are still yet to be explored. The search for extraterrestrial life is ongoing.
Yes, only on the Earth. We don't know if the other planets have life