Planktons are microscopic organisms that live suspended in aquatic habitats. There are two groups: the phytoplanktons an..
The blood sugar level is regulated by two hormones. The mechanism behind this type of negative feedback control is descr..
Lymphocytes are a type of white blood cell capable of producing a specific immune response to unique antigens. In thi..
Life, as we know it today, is presumed to have started in the sea and many of them were likely eukaryotic animal-like or..
The hominid family diversified from the apes around 6 to 8 million years ago. Since then, the evolutionary path has prov..
A running water environment offers numerous microhabitats for many types of animals. Similar to plants, animals in lotic..