Aqueducts are artificial channels for transporting water.

select the best answer from the choices provided

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f

In dna, only the_ varies from one nucleotide to another. base phosphate sugar amino acid

In natural selection, what is actually “selected? ” a) alleles are directly selected b) genotypes are directly selected c) phenotypes are directly selected d) entire populations are directly selected

Sweating and breathing is an example of differentiation specialization maintaining homeostasis metabolism