A hot air balloon rises in the first place because the air inside is hot, which rises. So, if the air inside is not heated, it fails to rise and falls. Warm air rises because the particles get excited and jiggle with the heat, and cause the air to take up more space. So, as the surrounding air is probably colder and denser, the less dense hot air rises up in the hot air balloon.
Answer:
i only wrote this for points
Explanation:
Letter C because the farmer had felt the ground shake first than him listening to the sound
By increasing the amount of gibberellin applied to the corn plants makes the plants to develop taller. As the quantity of gibberellin is enlarged from 0.05 to 0.50 microgram, the average height of the corn plants increased from forty to seventy-five centimeters.