Answer:
They are all part of the nervous system.
Explanation:
The brain and the spinal cord are part of the central nervous system and the peripheral nerves are part of the peripheral nervous system. The nervous system works as the communication/ control system of the body. It transmits signals throughout the body.
The energy being described her is <u>potential energy.</u>
Observation can be called the process of gathering data. Data, is factual that has scientific evidence to proof.
Answer:
D. The model cannot explain why planets appear to go backward and make loops in the sky.
Explanation:
As an example, the observation of the planet Mars shows that there are times where it seems to be moving forward at first, then back, and then forward again. If Earth were the center of the the universe, then everything would have been revolving in one direction. Although they tried to back up their theory by assuming that planets moved in their own epicycles, it was explained that Mars seems to be moving backwards because the Earth had a smaller orbit than Mars, so at times, it would pass Mars, which has not yet completed that section of the orbit. When Earth then completes its cycle around, it will find Mars again ahead of it, moving forward.