Question

What are the factors that help life's existence on the earth

Answer 1

The factors that make existence of people ,evident on the earth are so many ,There are a number of phenomenon that without them life could be impossible on the earths surface .One of this  is  water .Water contributes ,greatly to the existence of flora and fauna in the ecosystem and to such man relies .

Another fact is that life on earth without force of gravity is next to impossible .In fact this is what makes planet mars not fit for human in habitation.

Another fact is air and in fact air in abundance with oxygen.People and animals cannot survive without air .