It must gain an electron because if the proton number was to change it would no longer be the same element.
Air caught in the ball of foil makes the ball less dense than water
Answer:
Currently in the united states using parallel system
Explanation:
because you can walk with the twomodes with internal combustion engine or running on electric power.
Gravity is a non contact force , jump from a little high place (don't do that :P) , you wont just get stuck in the air you will fall down , this is gravity you dont need any contact
