How many germ layers do flatworms have?

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the unequal cytoplasmic division that  results  in  one egg  and three polar bodies ensures that a fertilized  egg has  ample nutrients  forits journey  to  the uterus.

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex

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answer: collecting information/data

reason: the student is going around and asking people questions to collect data

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