The average depth of the photic zone is ________ in open ocean waters

a. 200 meters (660 feet)
b. 600 meters (2,000 feet)
c. 100 meters (330 feet)
d. 10 meters (33 feet)


c

Environmental & Atmospheric Sciences

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Geographers are interested in the spatial context of things

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

On Earth, the Sun passes directly overhead at 25° north latitude ________ times a year

A) 0 B) 2 C) 1 D) 4

Environmental & Atmospheric Sciences

The Maunder Minimum

A) occurred during the Little Ice Age. B) saw high levels of sunspots. C) is a consequence of the weak Sun paradox. D) caused a significant change in the eccentricity of Earth's orbit. E) has been deduced by examining ice-core samples from Greenland.

Environmental & Atmospheric Sciences

In a battery, if the following oxidation-reduction reactions takes place normally:Mn2O3 + ZnO ? 2 MnO2 + Zn What reaction would be taking place if you were charging the battery?

A. ZnO ? Zn B. 2 MnO2 + Zn ? Mn2O3 + ZnO C. Mn2O3 ? MnO2  D. all of the above E. none of the above

Environmental & Atmospheric Sciences