Protons copy the number equal
1. Delta, is formed by constructive erosion.

EQUATOR IS THE LINE THAT DIVIDES EARTH INTO TWO HEMISPHERES .
A. Internal. Most cars use that type of set up because it's more efficient, you can find more about it on this website, https://auto.howstuffworks.com/did-cars-ever-have-external-combustion-engines.htm
:)
~ Ria