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When species lose their habitats they may..

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study?

Agene pool: a) is the collection of all the alleles found in a single species b) is the collection of all the alleles found in a single population c) is the collection of all the chromosomes found in a single population d) is the collection of genes in a species that allow the individuals to swim