If water is the primary transport mechanism for a given sediment, the grain size MOST closely indicates the: a. geographic extent of the weathering source rock at outcrop.
b. average velocity of the water from the time of erosion until deposition.
c. velocity of the water at the moment the sediment settled to the bottom.
d. climate conditions at the time of deposition

Which is an accurate description of the physical characteristics of poland? its fertile soil is found only along riverbanks, and its mountainous region in the northwest has few mineral resources. it is mostly flat with fertile soil except in the east and northeast, and the mountainous region in the south has large deposits of coal and copper. it is covered with thick forests, and it has large reserves of coal, petroleum, and natural gas. its landscape is dominated by plateaus, mountains, and high ridges, and it has large deposits of sulfur and copper in the northeast.