With regard to the population size of a species and what factors may affect them, two factors have been defined. They ar..
Some of the body movements can be controlled at will, others cannot. The body has a motor program, which is the pattern ..
Different pregnancy and birth control and contraception strategies are described. Read this tutorial to learn each of th..
The evolution of the species of the genus "Homo" led to the emergence of modern humans. Find out more about human evolut..
This tutorial deals with the abiotic factors of the freshwater environment that determine what sort of life would be sui..
Human consciousness and behavior are an interesting topic since they are determined and controlled by the brain. Conscio..