According to their Watchtower web site:
Evolutionary theory and the teachings of Christ are incompatible.
So they absolutely reject Evolution as defined by the theory that life arose from inanimate chemicals, formed into self-replicating cells, and slowly developed into more and more complex creatures, with man being the most intelligent of its productions.
As far as intelligent design is concerned, they also suggest that it does not go far enough. Intelligent Design only theorizes that life, or the universe, cannot have arisen by chance and was designed and created by some intelligent entity. Jehovah's Witnesses state unequivocally that specifically God created everything, not just some vague "intelligent entity." In that respect, their beliefs are compatible with intelligent design but intelligent design does not go far enough.
natural selection
Darwins theory of evolution :)
Darwins theory of evolution
The principle of evolution by means of natural selection.
fittest
can someone help me please
Charles Darwin studied birds, medicine, and theory of evolution.
Darwin's Theory of Evolution states that organisms make small changes over time to adapt to their environment. For example, humans have evolved to be more intelligent and polar bears have a layer of fat to keep them warm.
no the theory of evolution is a species becoming more advanced not over populated
Did you mean Charles Darwin? (Darwinism, Theologists and Philosopher?)
Genetic variations are produced by mutations and sexual recombination
If you're referring to the guy who formed the theory of evolution, no. He died in 1882, I believe.