Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..
Cell respiration is the process of creating ATP. It is "respiration" because it utilizes oxygen. Know the different stag..
Humans are capable of only one mode of reproduction, i.e. sexual reproduction. Haploid sex cells (gametes) are produced ..
Multicellular organisms evolved. The first ones were likely in the form of sponges. Multicellularity led to the evolutio..
Freshwater ecology focuses on the relations of aquatic organisms to their freshwater habitats. There are two forms of co..