What do you think caused people to accept the heliocentric model of the solar system?

Many people try to eliminate fat from their diets. which is one reason it is necessary for humans to eat fat? a. eating fat is the fastest way to get energy. b. fat eliminates triglycerides from the body. c. saturated fats clear out the blood vessels. d. fat nerves transmit signals. , this is for apex in summer school.

I’m stuck on this question cuz i’m stupid sksksksk

How can you tell the difference between rough er from smooth er?