The Earth is home to an enormous variety of life forms. This immense variety of living organisms is known as biodiversity. Biodiversity is...

Every organism has a definite life span - it is born, grows, matures, reproduces and eventually dies. Reproduction is a biological process by which...

Many properties of the elements are not retained when they form a compound. For example, hydrogen and oxygen are gases, whereas the substance formed...

Work is done by a force on an object, when the force displaces the object in the direction of the force.