What physical feature is needed for orographic precipitation to occur?
A) a lake
B) a mountain
C) a river
D) a desert
E) a tropical forest
B
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A rock with very low porosity will most often have a
A) low permeability. B) high permeability. C) large proportion of open spaces. D) very high density.
Net radiation (NET R) refers to
A) the net energy expended for ground heating and cooling.
B) the balance of all radiation incoming and outgoing at Earth's surface.
C) the amount of insolation coming into the surface.
D) the amount of insolation not absorbed at the surface.
Plankton that range between 200 microns and 2 millimeters in size are considered ________.
A. nanoplankton B. meroplankton C. macroplankton D. microplankton E. picoplankton
In what form is iron usually present in the human body?
A) associated with proteins B) free Fe3+ ions C) free Fe2+ ions D) free Fe atoms E) Iron is distributed among all of the above forms in the body.