Longitudinal dunes are: a. oriented parallel to the average wind ...

[littleanan]

Longitudinal dunes are:
 a. oriented parallel to the average wind direction.
  b. a type of barchan dune.
  c. a type of star dune.
  d. crescent-shaped dunes with arms that point upwind.
  e. only formed out of ice and snow.

Question 2

Barchans:
 a. grow by the process of deflation.
  b. are the only kind of silt.
  c. are the only kind of gravel dune.
  d. migrate.
  e. form where there are multiple sand-transporting wind directions.

[leahm14]

Answer to Question 1

A

Answer to Question 2

D

[littleanan]

Thanks for the timely response, appreciate it

[AngeliqueG]

Excellent