Natural Selection

6. The characteristic of an organism that enables it to survive and reproduce better than other organisms in a population in a given environment; the basis for evolution by natural selection.
8. The differences between individuals or the differences between populations
9. Is an interaction between organisms or species in which both the organisms or species are harmed

1. Traits that allow organisms to survive and reproduce in its environment.
2. The process where organisms better adapted to their environment tend to survive and produce more offspring.
3. All the organisms living at the same time or of approximately the same age
4. A measure of reproductive success (how many offspring an organism leaves in the next generation, relative to others in the group)
5. External factors which affect an organism's ability to survive in a given environment. Can be negative or positive.
7. A number of all the organisms of the same group or species who live in a particular geographical area and are capable of interbreeding.