A boundary is a line that marks the limits of an area; a dividing line. A state boundary is also known as a boarder. Borders are geographic boundaries of political entities or legal jurisdictions, such as governments, sovereign states, federated states, and other subnational entities.
Answer:
They can receive blood from another A+ donor or O+ donor
It makes studying more efficient
Pretty sure the answer is C. no less than one continuous year.
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