Author Question: The Cretaceous extinction event was uniformly disastrous to all marine and nonmarine organisms. ... (Read 98 times)

s.tung · **on:** Jul 13, 2018

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 · **Reply #1 on:** Jul 13, 2018

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.