Which marine ecosystem has the lowest average net primary productivity?
A) Algae beds and coral reefs
B) Estuaries
C) Freshwater swamp and marsh
D) Open Ocean
E) Upwelling zone
D
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Using the given conversion formulas, complete the following degree conversions.
5 F°: _______ 25 C°: _______ 15 F°: _______ 18 C°: _______ 6 C°: _______ 90 F°: _______ 27 C°: _______ 32 F°: _______
Persons traveling west across the International Date Line must ____
a. turn their calendar back one day b. turn their calendar ahead one day c. turn their watch 12 hours ahead d. turn their watch 12 hours back
Whether a glacier is advancing, retreating, or in a state of equilibrium, the ice forming the glacier continues to move downslope
Indicate whether the statement is true or false
The hydrologic cycle is considered a(n) ________ system
A) open B) infinite C) collapsing D) blue-colored E) closed