The choice is D - both A and C
Answer:
I don't know why it doesn't protect your brain as much as you think but maybe this will help
Explanation:
The brain is protected by the bones of the skull and by a covering of three thin membranes called meninges. The brain is also cushioned and protected by cerebrospinal fluid. ... It runs down from the brain through a canal in the center of the bones of the spine. These bones protect the spinal cord.
Answer: B) the temperature of the water
Explanation: The independent variable is the one that is manipulated or changed
31c-11c=20c So, therefore, the range is 20c.
Hope this helps! :D
