Question

Sam performs an activity .He takes an empty glass bottle, invert it and put in the water kept in vessel. He found that water does not enter the inverted glass bottle. When he inverts the bottle the water the water enters the bottle and air bubbles were coming out .with this activity he learns that
A. Air occupies spaceB. Bubbles were already present in the bottleC. Both a and bD. None of these​

Answer 1

Answer:

Both a and b . plz mark me as Brainliest