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The immune system is a network of cells, tissues, and organs that help ___________. (A) Remove waste (B) Defend the body (C) Get energy (D) Take in oxygen
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Mar 13, 2017
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The immune system is a network of cells, tissues, and organs that help ___________.
(A) Remove waste
(B) Defend the body
(C) Get energy
(D) Take in oxygen
Biology
middle-school
Marcelo Biffara
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Marcelo Biffara
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the right answer is: Defend the body
Alberto Alberto
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Mar 14, 2017
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Alberto Alberto
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I am pretty sure it is b I am 98% sure
Hamad Salahuddin
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Mar 20, 2017
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Hamad Salahuddin
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