hydrogen and helium and the most abundant elements in a nebula.
Either he’s busy, or he is just trying to ignore you.
Need more info tho
Answer:
that pressure is called atmospheric pressure or air pressure. It is the force exerted on a surface by the air above is as gravity pulls it to earth. atmospheric pressure is commonly measured with a barometer. In a barometer , a column of mercury is a glass tube rises ot falls as the weight of the atmospheric changes
Answer:
Its a physical
theres no chemical properties involved.
Explanation:
Brainliest please
