Today we can make observations that would lead us to the same conclusion as newton. If you throw a baseball in the air, it always comes back down. This is because of gravity. duh.
I don't know about it your answer will give another people
Elastic
Explanation is that it is force which is snapping back
C. Amount of oxygen
The others either change but don’t decrease or they increase.
Answer:
B) Aerosol
The particles from the pigeon droppings are likely to be transmitted from the air vents directly into Martyn's respiratory system