C. Planets can move at a varying speed due to forces exerted in space.
The total charge on an atom comes from protons and electrons.
The proton is positively charged while the electron is negatively charged. A neutral atom would have an equal number of protons and electrons.
An atom with more protons than electrons will be positively charged while those with more electrons than protons will be negatively charged.
More on the atom can be found here: brainly.com/question/1641336
Answer:
B
Explanation:
"I think my bike is making a scraping noise because the bearings are not lubricated."
