Playas are ____
a. ancient Pleistocene shorelines representing a past, more humid climate
b. ancient abandoned river courses representing a past, more humid climate
c. intensely gullied
d. occasionally and at least partly flooded with water
d
You might also like to view...
For the same discharge, gradient, and channel cross-section, a stream with a boulder-strewn bed would be more turbulent than one with a sandy bed.
a. true b. false
The largest death toll from a natural disaster in the United States (over 6,000 killed) was caused by:
a. an earthquake. b. river flooding c. a hurricane. d. a landslide. e. a volcanic eruption
Which of the following is false regarding tornados?
A) Wind speeds can exceed 322 kmph (200 mph). B) Since 1990 the United States has averaged over 1000 per year. C) The air pressure inside a tornado funnel is 10% greater than the surrounding air. D) The peak months are May and June.
Fires are a major environmental risk of underground coal mines.
Answer the following statement true (T) or false (F)