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Platelets come into contact with an area of an artery wall which has become damaged, changing their shape from flattened disks to long thin projections. The platelets stick together, forming a temporary plug...

Carbohydrates, as the word says, are made up of Carbon, Oxygen and Hydrogen. They are commonly known as suggarsand are present in different forms in some kind of foods. We can divide them in different groups...

diffusion is the movement of particles from a high concentration to a low concentration through a semi permeable membrane. an example would be the movement of food molecules through the gut wall as they pass...

risk factor is something which increases your chance of developing a particular disease. risk factor of coronory heart disease is diet due to the atheroma developed from the fatty material deposited in the a...

eutrophication is whereby excess feriliser from farmland has run off into areas of water such as lakes or rivers. algae growth is promoted due to the rise in phosphates. in turn the remaining oxygen in the w...