Meet the colorful takahē, an extremely rare flightless bird. Find out more about its unique features and why they matte..
Planktons are microscopic organisms that live suspended in aquatic habitats. There are two groups: the phytoplanktons an..
A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal ..
The hominid family diversified from the apes around 6 to 8 million years ago. Since then, the evolutionary path has prov..
The Earth's ecosphere was rapidly changing and throwing up a wide range of ecological niches that new adaptive organisms..
The kidneys are responsible for the regulation of water and inorganic ions. Read this tutorial to learn about the differ..
