The conversion of nitrates into nitrogen gas which is then released into the atmosphere. This is caused by bacteria and how they obtain their energy. A small amount is converted to usable forms by lightning in a process called atmospheric nitrogen fixation...
Lymphocytes are a type of white blood cell capable of producing a specific immune response to unique antigens. In thi..
Hormones are produced in the endocrine glands of animals. The pituitary gland and hypothalamus are the most impor..
Animals living in aquatic habitats have diversified and evolved through time. They eventually occupy ecological niches a..
This tutorial investigates perception as two people can interpret the same thing differently. Know more about human perc..
The Earth's ecosphere was rapidly changing and throwing up a wide range of ecological niches that new adaptive organisms..
The cell is defined as the fundamental, functional unit of life. Some organisms are comprised of only one cell whereas o..
