The human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides ..
The Earth's ecosphere was rapidly changing and throwing up a wide range of ecological niches that new adaptive organisms..
Hormones are essential in the regulation of the activity of the various biological systems of the human body. The ineffi..
Humans are capable of only one mode of reproduction, i.e. sexual reproduction. Haploid sex cells (gametes) are produced ..
The evolution of the species of the genus "Homo" led to the emergence of modern humans. Find out more about human evolut..
Adaptation, in biology and ecology, refers to the process or trait through which organisms or the populations in a habit..
