A balanced diet is essential to a healthy organism. Insufficiency or too much of a particular element or compound, such ..
Meet some of New Zealand's unique fauna, including endemic insects, frogs, reptiles, birds, and mammals, and investigate..
This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..
The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..
Plants and animals need elements, such as nitrogen, phosphorus, potassium, and magnesium for proper growth and developme..