Please help me with all the questions ill mark u brainlist

How have the competing explanations' experiments on atoms affected the development of the atomic model?

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx hurrim timed

Explain how the energy of rubber ball is tranforned as it roll down a ramp. give evidence that the energy of the og the ball remains the same at all points on the ramp