a theory of organic evolution claiming that new species arise and are perpetuated by natural selection.The theory that was created by the english biologist Charles darwin, where the ‘survival of the fittest’ in species would guarantee long term survival. See the natural selection tutorial.
Apart from vitamins, the human body also requires high energy sources such as carbohydrates and fats. If you want an ove..
The blood sugar level is regulated by two hormones. The mechanism behind this type of negative feedback control is descr..
A typical eukaryotic cell is comprised of cytoplasm with different organelles, such as nucleus, endoplasmic reticulum, G..
This tutorial elaborates on how the nervous system works, particularly at the tissue level of the brain. There are three..
Myelin sheath is essential for a faster conductivity of signals. Know more about this feature of some neurons in the Cen..
The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..