During the past 20 years, computer scientists focused increasingly on starting and running successful businesses. However, since businesses must be profitable, computer scientists must focus on developing...
The circulatory system consists of a network of artery, veins and pumping organ called the heart. The additional is the lymphatic system which is discussed separately. The circulatory system essentially...
Photosynthesis is a term used to describe the process of preparation of food by green plants. The process uses energy from sunlight to convert carbon dioxide and water into the molecules which are needed...