Question

give reason.
1) a balloon becomes bigger when fill it with air .
2) a balloon bursts if we continue to blow air in it.
3) a candle goes off after sometime, when it is covered in a jar.
4) astronauts need to carry oxygen when they go to space.
5) the water in a well is mostly clean.​

Answer 1

Explanation:

Here the answers

1. Because there is very space in the ballon
2. Because the space is full with air
3. Because the oxygen inside the jar is used by the candle
4. Because there is no oxygen in space