Answer:
Helium is also the second simplest of the chemical elements. Its atoms consist of two protons, two neutrons, and two electrons. Only the hydrogen atom is simpler than a helium atom. The hydrogen atom has one proton, one electron, and no neutrons.
Explanation:
Answer:
Gravity
Explanation:
A planet is gravitationally pulled around the sun.
Answer:
B
Explanation:
By looking at how seismic waves change speeds as they travel
through Earth
There's 6.022×10^23 particles in 1 mole of anything
like there is 1000 grams in 1 kilogram of anything
