Which of the following explains why a mountain can become flat after millions of years? Weathering and erosion cause the soil from the mountain to erode down the mountain's slope.

Heat from the sun causes the soil to dry out, decreasing the mountain's volume and causing it to sink

Animals walking and running across the land compact the soil over time until it becomes flat

The mountain crumbles away after losing all its nutrients because there are too many trees

18. determine whether each stateme blank space given. ach statement is true (t) or false (f). place your answer in the 8. when a cell is put into an isotonic solution, individual wat put into an isotonic solution, individual water molecules cannot move back and forth across the cell membrane. d. when a cell is put into a hypertonic solution, there is a net movement of water molecules across the cell membrane into the cell. c. when a cell is put into a hypotonic solution, there is a net movement of water molecules across the cell membrane out of the cell. d. the movement of any solvent across a semi-permeable membrane is called osmosis. e. carrier proteins have the ability to change shape and physically move molecules across the cell membrane. f. in facilitated diffusion, the concentration of the molecules to be moved across the cell membrane is higher inside the cell.