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Type: Multiple-Choice
Category: Nervous and Endocrine Systems
Level: Grade 8
Score: 3
Author: gab1babyb
Last Modified: 6 months ago

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Nervous and Endocrine Systems Question

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Grade 8 Nervous and Endocrine Systems

A signal that can cause an organism to react is a
  1. stimulus.
  2. life span.
  3. response.
  4. movement.
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