This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..
This tutorial describes the sigmoid curve, annual plant growth, tree growth, human growth, and insect growth as the grow..
With regard to the population size of a species and what factors may affect them, two factors have been defined. They ar..
Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..
A balanced diet is essential to a healthy organism. Insufficiency or too much of a particular element or compound, such ..
The nucleus containing the genetic material, DNA, and the mitochondria, well-identified as the "powerhouse of the cell",..
