Seed plants are vascular plants. They differ from the other vascular plants in producing seeds that germinate into a new..
This tutorial recognizes the importance of food as a source of energy that will fuel many biological processes. A good d..
Darwin's Finches are an example of natural selection in action. They are an excellent example of the way species' gene p..
A running water environment offers numerous microhabitats for many types of animals. Similar to plants, animals in lotic..
Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. The s..
There are more species of insects than any other species combined. This surely illustrates that insects have the selecti..