<span>The skeletal system also protects
internal organs and produces blood cells. Bones provide calcium that is
essential for the proper functioning of the nervous system. ... Sensory receptors in joints between bones send signals about body position to the brain. The brain regulates the position of bones by controlling muscles.</span>
Answer:
I believe answer choice C(w)
Explanation:That’s what I picked and I got it correct
The answer should be "His observation of the geographic distributions of living things."
They all need energy, food, and water. If we're talking about animals, then they need oxygen. If we're talking about plants, then they need carbon dioxide
They do not need parents. Some animals don't have parents the moment they are born (eg: sea turtles).
So based on all that, B seems like the best answer