C they want to keep the air cleaner so they will make it more efficient.
Answer:
gravity
Explanation:
streams erode dirt and rocks, transport the sediment, and redeposit it in new locations shaping the earths surface into a system of stream valleys. streams now flow downhill due to the force of gravity
Fossil symbols and mountain belts were helpful in deciding where to move the continents because you could see how they were placed together.
Answer:
The slope is 1/2.
Explanation:
To find slope, you use this equation: (y2-y1)/(x2-x1)
So, here, the equation would be (7-4)/(10-4), or 3/6, which is 1/2. Hope this helped!!