The questions "What are species?" and "How do we identify species ... In this page, you will learn about variation within gene pools, as well as the ways in which this variation can be an ...

The variation within a single species has produced differences as large as those between two separate species. Some critics of the theory of evolution argue that it doesn't convincingly explain ...

This is called environmental variation. Humans, dogs and goldfish are examples of species. Different species have different characteristics from each other. For example, dogs have tails and humans ...

Identify how animals and plants are adapted to suit their environment in different ways and that adaptation may lead to evolution. Recognize that characteristics are passed from parents to their ...