8. which of the following statements is true? a. glacial erosion forms wide, u-shaped valleys b. mudflows are the least dangerous type of sediment flow c. mass wasting happens when sediment is carried from a low elevation to a higher one d. in saltation, acids and salt in ocean water dissolve rock minerals

The correct answer is - A. Glacial erosion forms wide, U-shaped valleys.

The glaciers are essentially large masses of ice, formed either by large mas of snow or a frozen river. Because the ice is expanding, but also the glaciers appear at higher places and slowly move towards lower parts, they contribute to a lot of erosion. The size and their weight, plus their movement and the pressure they make, the glaciers manage to erode lot of material, and by doing so, they reshape the landscape in accordance to their form, which is an elongated, river like, U-shape. Once they are melted, the glaciers leave behind them long and narrow U-shaped valleys, some of which remain as a valleys, while others are filled with sea water and formed the fjords.

answer: tributaries flow into rivers.

wetland is a biome that develops when the water gets accumulated in a land exhibiting a huge depression. these form either seasonally or permanently. the water in the wetland comes from rivers, lakes, ocean, flood, rain or other sources. the wetlands includes mangroves, marshes and peatland.

tributaries flow into the rivers develops a wetland because such water will get deposited in the depression and will restrict the original flow of tributary water. hence, water with low drainage current combines with the river water.

well, you see. the answer to your question is quite simple. the thing that is big, powerful, and over 9,000 is your mom.