Answer:
A reference point is a place or object used for comparison to determine if something is in motion. An object is in motion if it changes position relative to a reference point. Objects that are fixed relative to Earth – such as a building, a tree, or a sign - make good reference points.
Explanation:
hope this helps
The plant receives energy from the sun and food sources.
<span>The finding this indicates is most likely peritonitis. Rebound tenderness refers to pain felt when pressure is removed instead of applied, such as taking your hand away from holding a wound or perceived injury such as chest pain. In this situation there is usually an infection and it can be quite deadly. The pain is caused by seepage or a tear somewhere in the intestines.</span>
The nervous system, i could be wrong.
