Question

carol and maria spread some dirt out in a flat pan. their classmate ben blew over the dirt with a straw. some of the dirt moved and formed ruts and bumps. they propped up one end of the pan with a board so the dirt looked like a big hill. then the girls sprayed the dirt with some water in a spray bottle. more dirt moved as the water ran down the hill. both the wind and the water modeled what process? a decomposition b erosion c gravity d weathering

Explanation:

Erosion is the process by which soil, rock, and other surface - material are worn away by natural forces like wind and water. In the described experiment, wind (blowing through a straw) and water (sprayed from a bottle) move the dirt, which is characteristic of erosion. Decomposition involves the breakdown of organic matter, gravity is a force not a process of moving surface material in this context, and weathering is the breaking down of rocks and minerals at or near the Earth's surface, not the movement of dirt by wind and water as shown here.

Answer:

B. erosion