Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..
Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..
Freshwater ecology focuses on the relations of aquatic organisms to their freshwater habitats. There are two forms of co..
ATP is the energy source that is typically used by an organism in its daily activities. The name is based on its structu..
Humans are capable of only one mode of reproduction, i.e. sexual reproduction. Haploid sex cells (gametes) are produced ..
Genes are expressed through the process of protein synthesis. This elaborate tutorial provides an in-depth review of the..