Question

why earth is only living planet is there other planets like this?

Answer 1

Earth has a breathable atmosphere. Oxygen is the gas that is required for the life of most creatures. This is present in Earth's atmosphere and also in water. Oxygen is constantly put into the atmosphere by plants and trees. Earth's atmosphere also contains a small amount of carbon dioxide. This is a poisonous gas which makes up most of the atmosphere of planets like Venus andMars and makes them unable to support human life. However, its smaller presence on Earth is useful as it helps to moderate the planet's temperature and is absorbed by plants during photosynthesis to produce oxygen. 

Answer 2

no till now there isnt but the scientist are searching other planets to support life like mars is believed to support life..
and why earth supports life...
because the earth is the planet which is at a safe distance from the sun and contains atmosphere..
hope u like it