The Earth's ecosphere was rapidly changing and throwing up a wide range of ecological niches that new adaptive organisms..
Some of the body movements can be controlled at will, others cannot. The body has a motor program, which is the pattern ..
Animals living in aquatic habitats have diversified and evolved through time. They eventually occupy ecological niches a..
Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..
Lotic communities have conditions that are rather harsh for typical plants. Thus, the diversity of plant species in loti..
In plants, growth occurs in meristems, which are the site of repeated cell division of unspecialized cells. These cells ..