Identify the true statement.
a. forest fires followed by heavy rains are likely to result in severe mud and debris flows.
b. weathering does not affect the stability of a slope.
c. vegetation is heavy, and therefore deforesting an area can keep slopes stable.
d. saturating a slope with water tends to hold unconsolidated grains together and thus stabilize slopes.

The great scientist alfred wegener proposed that continents have moved, while other scientists such as t. c.chamberlin argued against wegener. wegener's ideas eventually won, and are now widely accepted, because: a) wegener's ideas were more beautiful, and so were favored by the intellectual elite. b) wegener's ideas did a better job of predicting the results of new observations and experiments. c) wegener's ideas appealed to dead white european males, whereas chamberlin's didn't. d) wegener's ideas appalled dead white european males, and we all know that in this politically correct era, dead white european males cannot get a fair shake. e) wegener won the nobel prize.