D its D Because if you think about it....What is the role of cells? without cells we would be sick and all the bad bacteria would be able to flow into our bodys no problem at all.
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Predicting the genotype of offspring
There are four possible combinations of gametes for the AaBb parent. Half of the gametes get a dominant A and a dominant B allele; the other half of the gametes get a recessive a and a recessive b allele. Both parents produce 25% each of AB, Ab, aB, and ab.
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i think homeostasis for osmosis
#1 is D) uniformitarianism