A believe that’s called a reference point.
Answer:
» e. Electrons and protons
Explaination :
Electrons are negatively charged and protons are positively charged.
- The neutrons do not have a charge.
Answer:
Static, sliding, and rolling friction occur between solid surfaces. Static friction is strongest, followed by sliding friction, and then rolling friction, which is weakest. Fluid friction occurs in fluids, which are liquids or gases.
Explanation:
The answer looks to be "A" because Protein is used to regulate organs.
Answer:
B. More African Americans became registered to vote in Southern states.
Explanation: