Please help ACTUALLY ANSWER i dont understand CER writing? this is an example:

Claim: cookies are good because they are good
evidence : ¨cookies have 1 billion protien¨- the new york times
reasoning: (what would i put here???)
PLEASE HELP AND ACTUALLUY ANSWER

Galileo was the first to notice that the moon has craters, valleys, and mountains. how might this have changed people's perception of the moon at the time?

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.