The best defining feature of an arid region is a place where
A) precipitation is less than the amount of water that could have been evaporated or transpired.
B) streams carry little or no water.
C) vegetation is sparse.
D) here is no influence of the intertropical convergence zone.
A) precipitation is less than the amount of water that could have been evaporated or transpired.
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Which of the following is not something we can learn by determining isotopic ages?
A) The age of a volcanic eruption B) The age when a rock is uplifted toward the surface C) The age of material from which clasts in a sedimentary rock were derived D) The cooling history by using different types of isotopic ages E) We can determine all of these.
Copepods belong to which group?
a. coccolithophores b. dinoflagellates c. diatoms d. zooplankton e. cyanobacteria
How much biomass in tropical coral reefs is attributed to the coral alone?
A) 15% B) 30% C) 50% D) 75%
In the Middle East Ecological Trilogy there is substantial interaction and trading between pastoral nomads and urbanites
Indicate whether the statement is true or false