The hominid family diversified from the apes around 6 to 8 million years ago. Since then, the evolutionary path has prov..
Plantlife can be studied at a variety of levels, from the molecular, genetic and biochemical level through organelles, c..
Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..
This tutorial describes the sigmoid curve, annual plant growth, tree growth, human growth, and insect growth as the grow..
The Earth's ecosphere was rapidly changing and throwing up a wide range of ecological niches that new adaptive organisms..
Homeostasis is essential to maintain conditions within the tolerable limits. Otherwise, the body will fail to function p..