Most reef-building corals receive about ________ of their nutrition from symbiotic zooxanthellae algae
A) 50%
B) 60%
C) 70%
D) 80%
E) 90%
E
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Ultimately, which of the following is the source of energy that continually drives the hydrologic cycle?
a. Gravity b. energy from the sun and gravity c. Electricity d. geothermal energy e. Wind
Equilibrium between which of the following factors is described by the hydrostatic equation?
A. vertical pressure gradient force and gravity B. friction force and gravity C. Coriolis force and gravity D. horizontal pressure gradient force and gravity
The transfer of heat through matter by molecular activity is ________
conduction convection radiation all of these
The partisan divide over environmental issues has ____ between Democrats and Republicans in the last 30 years.
a. increased b. stabilized c. fluctuated every election cycle d. decreased