Following nine months inside the mother's womb is the birth of the baby. Know the different stages of the birthing proce..
This tutorial deals with the abiotic factors of the freshwater environment that determine what sort of life would be sui..
Bryophytes (nonvascular plants) are a plant group characterized by lacking vascular tissues. They include the mosses, th..
This tutorial describes the different types and causes of brain damage. Find out how genetics, physical injury, lack of ..
Multicellular organisms evolved. The first ones were likely in the form of sponges. Multicellularity led to the evolutio..
A balanced diet is essential to a healthy organism. Insufficiency or too much of a particular element or compound, such ..