hirkhoe hirkhoe

21-09-2014
Chemistry

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Why are protists considered both helpful and harmful organisms?

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rasheed1999 rasheed1999

21-09-2014

protists can be both beneficial and harmful.some protists such ...if some protists live inside the digestive system of animals.

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21-09-2014

they are bacteria and the help us digest our food but they also can make us sick

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