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Type: Multiple-Choice
Category: Nervous and Endocrine Systems
Level: Grade 8
Score: 3
Author: gab1babyb
Last Modified: a month 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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