How are humans agents of weathering and erosion? What will be ...

[tingc95]

How are humans agents of weathering and erosion?
 
  What will be an ideal response?

Question 2

Decades ago, a brick factory used to be located along a river. Waste materials and faulty bricks were piled along the banks of the river, and some of them fell into the water. Years later, some of these materials were removed.
 
  The bricks were still recognizable as bricks, some with the manufacturer's mark clearly visible on the front, but the edges and corners were rounded over. Why were the edges and corners of the bricks so rounded over while the faces of the bricks were largely untouched?
  What will be an ideal response?

[maya.nigrin17@yahoo.com]

Answer to Question 1

Answer: Answers will vary, but some examples can include mining, construction, agriculture, and usage of chemicals on the landscape.

Answer to Question 2

Answer: The edges and corners of a material have more surface area exposed than the flat surface in the center of the rock. As a result, they will weather faster, making the overall shape of the rock more rounded.