Ultimately, all scientific knowledge comes from:
Select one
O a. textbooks
O b. experimentation
<u>O c. experimentation & </u><u>observation</u><u> </u><u>✓</u><u>✓</u><u>✓</u>
O d. observation
Answer:
the nervous system, because it is involved in the signaling and receiving process
Explanation:
The dependent variable should be how the height and shape changed