You will also like...
Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..
ATP is the energy source that is typically used by an organism in its daily activities. The name is based on its structu..
This tutorial looks at sex determination via the sex chromosomes, X and Y. Read it to get more info on X and Y chromosom..
Autotrophs flourished, absorbing carbon and light. Soon after, primitive life forms that could assimilate oxygen thrived..
Mammals are a diverse group of organisms, where most of them develop their offspring within the uterus of the mother. Ov..