Stabilized sand dunes _____. a. have only been found on Mars b. ...

[cabate]

Stabilized sand dunes _____.
 a. have only been found on Mars
 b. are protected from erosion by a surface salt crust
  c. are protected from erosion by a surface clay pan
  d. are anchored by yardangs
 e. are normally stabilized by vegetation

Question 2

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

[pami445]

Answer to Question 1

e

Answer to Question 2

a

[cabate]

Excellent

[aruss1303]

Thanks for the timely response, appreciate it