Answer:
1 - a
2 - a
3 - c / d ( I am not sure )
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It was caused by a mix of different scenarios. Rome was constantly attacked by Barbarian tribes; they were over-expanded, which made it really hard for them to keep their entire empire under control; they had a lot of economic problems and relied too much on slave labor; and they spent way too much money on their military, just to name a few factors.
Answer:
b. the mass of earth is much greater than the moon.
The correct answer is the last option. Most glaciers take hundreds of years to form. Glaciers form when snow remains in an area for a long time and accumulation happens to transfer it into ice. This process takes more than a hundred years.
Answer:
The elevation changes from 635 to 600 at the picnic area.
Explanation:
In the picnic area which is close to point 4 on the map, the elevation changes from 635 to 600. We see that the site chosen for the picnic has a very gentle elevation and would be easily taken as a flat plain surrounded by hills.
The contours here are far apart and it implies a flat area with gentle slope. The only creek here is the equation creek. The area is below 635.