natrual selection

2. a supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained.
5. the disguising of military personnel, equipment, and installations by painting or covering them to make them blend in with their surroundings.
6. a change or difference in condition, amount, or level, typically with certain limits.
9. theory of biological evolution
10. Selection,the process whereby organisms better adapted to their environment tend to survive and produce more offspring.
12. he process by which traits or characteristics pass from parents to offspring through the genes.

1. he notion that an organism can pass on to its offspring physical characteristics that the parent organism acquired through use or disuse during its lifetime.
3. gradually, especially from a simple to a more complex form.
4. the action or process of mutating
7. of Evolution, he theory of evolution by natural selection, first formulated in Charles Darwin's book "On the Origin of Species"
8. the action or process of adapting or being adapted
11. a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding.