The main heart valves (tricuspid bicuspid) are forced shut to prevent backflow of blood into the atria.
Reproduction, it is forming new individuals of the same species either sexual (2 parents) or asexual (1 parent).
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Add drops of water to the clear solution Milky emulsion or turbid solution is formed The solution remains clear Carbohydrates Carbohydrates are made up of carbon, hydrogen and oxygen.
No No Yes Partially permeable membrane required?
Plants can have needle-like leaves.
There are different types of blood vessels.
Colon By the time the food reaches the large intestine all nutrients have been absorbed.
They get rid of bacteria and viruses.
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