9 Which level of organization is characterized by a group of cells that work together to perform a common function?
organ
tissue
organ system
organism
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What would be the most likely result if the ph of the stomach were increased to 5

What are some characteristics of a free enterprise economy?

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?