Multiple Choice
Desert varnish consists of ____________.
A) pesticide and other pollutant residues
B) dusts of iron and magnesium oxides
C) dust deposits affected by microorganisms
D) carbonate cements with iron impurities,for example,siderite.
Correct Answer:
Verified
Correct Answer:
Verified
Q16: During heavy rainstorms,rates of physical weathering and
Q19: The Sahara is a desert primarily because
Q22: Which statement about desert life is correct?<br>A)Mammals,unlike
Q23: Saltation of sand involves _.<br>A)spherical grains rolling
Q25: Which of the following are adaptations of
Q32: An arroyo is a steep-sided,linear trough produced
Q34: A mushroom-shaped landform consisting of a column
Q36: Vegetation in the desert consists of _.<br>A)cacti
Q37: Desert climate associated with a rain shadow
Q50: Evaporite deposits in coastal,subtropical regions derived from