If the steep face of the sand dune is on the southeast side of the dune then the prevailing wind in this area is from the

The correct answer is - Northwestern direction.

The steep side of a sand dune is forming on the side that is sheltered by the prevailing wind, thus on the opposite side. In this case, since the steep side is on the southeastern side of the sand dune, the opposite of it is the northwestern side, thus the wind is coming from northwestern direction. The side of the sand dune that will be exposed to the prevailing wind will be much more massive, and will have a much less steeper side, wher ethe fall will be very gradual.

both are true, the congress does have the power to create banks, even if this power is not specifically described in the constitution, since there is nothing restricting it and there is power given to the congress to make "all laws which shall be necessary and proper". maryland was not allowed to tax a branch of the national bank operating there, and the supreme court decided that no state could. both of these topics were discussed in a decision of the mcculloch v. maryland case in 1819.