In order for evolution to occur, a _____________ must have the potential to increase in number.

In order for evolution to occur, there must be genetic ______________ due to mutation and sexual reproduction.

Evolution occurs when there is _________________ for an environment's limited supply of resources that individuals need to survive and reproduce.

Evolution can occur if the organisms with the advantage are better able to survive and _____________ in that environment.

Natural selection leads to ______________, which is when organisms are well suited to exist in a specific environment.

Which of these is NOT a type of adaptation?

Organisms with an advantageous heritable trait will _________________ in proportion within the population of future generations.

Distribution of traits in a population can change when ____________ change.

Changes in the physical environment, whether natural or human caused, have contributed to the ____________ of some species.

Changes to the physical environment, whether natural or human caused, have contributed to the emergence of new __________________.