Question

How did life begins ?​

Answer 1

Answer:

Life begins when a spermatozoon (a mature male germ cell) and an ovum (a mature female germ cell) unite to form one single cell called “egg” or “zygote”, which as of that moment, will undergo a series of divisions that will ultimately result in the birth of an infant.

Answer 2

The earliest known life-forms are putative fossilized microorganisms, found in hydrothermal vent precipitates, that may have lived as early as 4.28 Gya (billion years ago), relatively soon after the oceans formed 4.41 Gya, and not long after the formation of the Earth 4.54 Gya.

We know that life began at least 3.5 billion years ago, because that is the age of the oldest rocks with fossil evidence of life on earth. These rocks are rare because subsequent geologic processes have reshaped the surface of our planet, often destroying older rocks while making new ones.