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Blood functions as part of the __________ system and the __________ system.

circulatory; excretory
digestive; musculoskeletal
endocrine; respiratory
immune; reproductive

User Noobed
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3 votes

Answer:

a

Step-by-step explanation:

User Shakyra
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0 votes
it’s answer choice a)
User Midnightnoir
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8.2k points
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