Which organ takes part in the circulation of blood in a living organism?​

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All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

How is the national wildlife refuge system similar to the pacific region coastal program? a. both programs are concerned with providing habitats for wildlife b. both programs are primarily concerned with preserving fish species c. both programs have set aside 150 million acres of land d. both programs are under the u.s. fish and wildlife service