Why do most people accept Earth's spherical shape as a scientific fact?

A.) It is a convincing persuasion by authoritative scientists.

B.)It is a consensus agreed upon by most people.

C.) Observations, models, and other evidence prove this as a fact.

D.)The flat-Earth model has no testable hypotheses.

Thomas his older brothers, who own a junk yard, on the weekends to earn extra money. he likes to them push broken-down cars to the back of the junk yard because it makes him feel strong. last saturday, they pushed three cars with different weights, and he noticed he used different amounts of force for each one. the cars were the following weights: white car: 2,700 kg red car: 1,500 kg blue car: 2,100 kg think about how much force is needed to move each car. which correctly lists the cars in order from the most to least amount of force needed to move them? a) white, blue, red b) blue, red, white c) red, white, blue d) white, red, blue

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is as it changes into other forms of energy.

How do you know how many valence electrons an atom has?