The Cretaceous extinction event was uniformly disastrous to all ...

[s.tung]

The Cretaceous extinction event was uniformly disastrous to all marine and nonmarine organisms.
  Indicate whether the statement is true or false

Question 2

Briefly explain why sand is moved by wind before clay and silt during wind erosion.

[vkodali]

Answer to Question 1

False

Answer to Question 2

Sand grains protrude above the surface and are more easily caught by the wind, while clay and silt grains lie closer to the surface where there is a stationary layer of air, unless this is disturbed.

[s.tung]

Wow, this really help

[coreycathey]

Thanks for the timely response, appreciate it