Answer:
The molecules in the air can be displaced by a force creating sound waves. Vibrations generally travel faster in a solid compartment than as in gases.
Horizontal and vertical Speed are indirect towards each other and therefore the earth moves. This causes it to be in constant new positions, causing seasons.
Hydrogen can be obtained economically as a bi-product in the electrolysis of water.
Answer:
anything that hurts the Earth
Explanation:
idk because i dont know the options
