The endocrine system: A. releases hormones into your bloodstream
B. carries messages up your spinal cord
C. slows your body down when needed
D. speeds your body up when needed

A. releases hormones into your bloodstream

Explanation:

Endocrine glands release hormones into the bloodstream. The endocrine hormones help control mood, growth and development, the way our organs work, metabolism, and reproduction.

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explanation:

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explanation: hope this