A running water environment offers numerous microhabitats for many types of animals. Similar to plants, animals in lotic..
For human species to obviate extinction, reproductive mature adults should be producing viable offspring in order to con..
Following nine months inside the mother's womb is the birth of the baby. Know the different stages of the birthing proce..
The evolution of the species of the genus "Homo" led to the emergence of modern humans. Find out more about human evolut..
Illusions are the perceptions and sensory data obtained from situations in which human error prevents us from seeing the..
Nutrients in the soil are essential to the proper growth of a land plant. This tutorial deals with the properties of soi..
