Jamal wants to make a model of a hill near his house to test the way the slope affects how rain runs down the hill. which type of model would be best for what he needs?

a scale-model mound made of the same materials that make the real hill

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.

the answer is:  

line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).