While learning and intelligence are associated with the functions of a conscious mind, sleep and dreams are activities o..
Some of the body movements can be controlled at will, others cannot. The body has a motor program, which is the pattern ..
The diversification of several new species from a recent ancestral source, each adapted to utilize or occupy a vacant ad..
A still body of water may be disturbed by a variety of factors. One of them is wind. In fact, it is considered as the pr..
Hormones are chemical messengers produced by specialized glands and they were produced by switching on the genes designe..
Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. The s..