9th grade biology

1. There are 5 main substances that are needed by humans. they are carbohydrates, protein, fats, vitamins and dietary fibre.
2. Carbohydrates are organic compound that provide us with energy.
3. there are 3 kinds of carbohydrates, they are monosaccaharides, dissacharides and polysaccharides.
4. Proteins are very complex organic substances that help us to grow.
5. Kwashiorkor is one of desease that is caused by lacking of protein.
6. Fats are used to provide a source and storage of energy, protect organs from physical.injuries.
7. Water has the function to be solvent for inorganic and organic compounds.
8. there are 4 main digestive process. they are mechanical digestion, chemical digestion, absorption and assimilation.
9. inflammation, polyneuritis, and formation of ulcers are some effects of consuming excessive alcohol.