Because of their resemblance and relationship to prehistoric reptiles and many people think that birds descended from dinosaurs
Answer:
Of the many processes involved in the water cycle, the most important are evaporation, transpiration, condensation, precipitation
Explanation:
Answer:
The return of blood to the heart is assisted by the action of the skeletal- muscle pump. As muscles move, they squeeze the veins running through them. Veins contain a series of one-way valves, and they are squeezed, blood is pushed through the valves, which then close to prevent backflow.
When you rub a ballon in your hair.
