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1. List 5 organs
[heart,lungs,brain,kidneys,
liver] you learned about and tell about what they do.
2.What 2 organs help filter the blood?
3.How do bones and muscles work together when you raise your arm?
4.Trace a drop of blood as it leaves the heart and circles back again.
5.How do organs in animals and plants compare?
6.Do you think the heart or the brain is the control center of the body? Support your answer.

  • science -

    i don't understand #3, #4, #5, and #6

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