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balandron [24]
3 years ago
8

6) The human heart is a/n ....

Biology
2 answers:
hammer [34]3 years ago
8 0

Answer:

organ

system

movement

Explanation:

plz mark me brainliest.

sergij07 [2.7K]3 years ago
8 0

Answer:

6) c 7) a 8)a

Explanation:

Heart is said to be organ under the level of complexity. Heart is a complex composition of tissues

Group of organ that works together is known as organ system

Movement in organisms bring about contraction and relaxing of muscles

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