Question

How does darwins theory o natural selection explain yhe apperance of new life forms?

Answer 1

DARWIN , A BIOLOGIST SAID THAT ANIMALS WHO ARE SUITED TO LIVE IN A PLACE SURVIVE,ELSE ALL PERISH AWAY .IN THIS WAY EACH TIME THERE WOULD BE A APPEARANCE OF NEW LIFE FORMS.

Answer 2

The theory of natural selection proposed by Darwin in the year 1859 (Darwinism) : This theory states that the organisms evolution through natural selection and accumulation of inheritable variations.

Some of the features of the theory are :-

1. Limited food and space:- continuous consumption of food causes scarcity and even population of different species cannot increase their consumption beyond a certain limit.

2. Struggle for existence:- It is said, “Survival of the fittest”. So there are always competition going on among organisms for resources.

3. Variations:- New species arrive when there are variations such as in structure, size and physiology.

4. Inheritance of useful variations:- Next generation acquires the same process to get variations and natural selection. And formation of new variations by accumulations completely produces new species.