Answer:
They test or measure something.
Explanation:
Primary research articles report on research that has been completed. Therefore, a primary research article will review and analyze studies, and will state the research question and hypotheses of the studies presented. A primary research article does not test or measure anything, but will report on studies that do.
Answer:
a biological community of interacting organisms and their physical environment.
Explanation:
Answer:
1. Response
2. Interneurons
3. Motor neuron
4. Effector, anterior root, spinal cord
5. Anterior root
