Natural selection occurs when organisms compete for limited resources, such as food, water, and mates. Those with traits that make them better adapted to their environment are more likely to survive and reproduce, passing on those traits to their offspring.

Natural selection is the process by which organisms with favorable traits are more likely to survive and reproduce, passing on those traits to their offspring.

Artificial selection is the process by which humans selectively breed organisms with desired traits, such as increased crop yield or desirable physical characteristics.

Adaptation is the process by which organisms become better adapted to their environment over time, through natural selection or artificial selection.

Evolution is the process by which organisms evolve new traits or characteristics over time, through natural selection or artificial selection.

This is an example of natural selection because the bird with the long beak is better adapted to its environment and is more likely to survive and reproduce.

This is an example of artificial selection because the farmer is selectively breeding cows with a desired trait, in this case, higher milk production.

This is an example of adaptation because the bird's long beak is a trait that helps it to survive and reproduce in its environment.

This is an example of evolution because the bird's long beak is a trait that has evolved over time through natural selection.

Artificial selection is not a mechanism of evolution because it is a human-directed process, not a natural process.

Mutation is the process by which genetic variation is introduced into a population, through changes in the DNA sequence.

Genetic drift is the process by which the frequency of alleles in a population changes over time, due to random chance.

Convergent evolution is the process by which populations of organisms become more similar to each other over time, even though they may not be closely related.

Divergent evolution is the process by which populations of organisms become more different from each other over time, even though they may have a common ancestor.

Coevolution is the process by which two or more species evolve in response to each other, such as a predator and its prey.