Digestion is the mechanical and chemical breaking down of food into smaller components that can be absorbed into a blood stream. Digestion is a form of catabolism: a break-down of larger food molecules to smaller ones.
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Now,I know how my Digestive System works!Thanks a lot!
ReplyDeleteDear Mr Pang,
ReplyDeleteThank you for posting up so many videos. I very
glad that I know there is five systems in our body. I want to know about nervous system Please!
Irene Lee Wei Ling