repression-sensitization defense mechanisms involving approach and avoidance responses to threatening stimuli. The sensitizing process involves intellectualization in approaching or controlling the stimulus whereas repression involves unconscious denial in avoiding the stimulus...
The Earth's ecosphere was rapidly changing and throwing up a wide range of ecological niches that new adaptive organisms..
Animals living in aquatic habitats have diversified and evolved through time. They eventually occupy ecological niches a..
The nervous system is essentially a biological information highway. This tutorial gives an overview of the nervous syste..
Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..
This lesson explores the impact of biosecurity threats, and why they need to be identified and managed. Examples to incl..
The hominid family diversified from the apes around 6 to 8 million years ago. Since then, the evolutionary path has prov..
