Plants and animals need elements, such as nitrogen, phosphorus, potassium, and magnesium for proper growth and developme..
This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..
This tutorial introduces flowing water communities, which bring new and dithering factors into the equation for possible..
The hominid family diversified from the apes around 6 to 8 million years ago. Since then, the evolutionary path has prov..
Darwin's Finches are an example of natural selection in action. They are an excellent example of the way species' gene p..
Plants in lentic habitats have features not found in terrestrial plants. They acquired these features as they adapt to t..