subclinical infection (Science: epidemiology) An infection in which symptoms are sufficiently mild or inapparent to escape diagnosis other than by positive confirmation of the ability to transmit the infection or serologically...
This tutorial elaborates on the physical development of humans, particularly from puberty to adulthood. Read this tutori..
Geological periods is a study guide that cites the different geological periods on Earth's timeline. Each has a brief ov..
Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development f..
Some of the body movements can be controlled at will, others cannot. The body has a motor program, which is the pattern ..
If the balance of nature is left untouched, landscapes can change dramatically over time. A previous ecosystem is supers..
According to Charles Darwin's theory of natural selection, preferable genes are favored by nature in the gene pool, and ..
