Name: ___________________________Period

11._____A human is made up of trillions of cells. 12._____All living things have at least one cell. 13._____Homeostasis is when your body tries to maintain internal balance. 14._____Some living things use energy. 15._____The sun is the ultimate source of energy for all living organisms. 16. Give an example of a stimulus and response _____ ... ................
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