Mammals are a diverse group of organisms, where most of them develop their offspring within the uterus of the mother. Ov..
Certain species are capable of expressing characteristics indicative of the state of the ecosystem they occupy. They are..
Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..
A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal ..
This tutorial elaborates on the physical development of humans, particularly from puberty to adulthood. Read this tutori..
While learning and intelligence are associated with the functions of a conscious mind, sleep and dreams are activities o..
