How does water enter the atmosphere?
a.
liquid water evaporates from lakes when heated by the sun.
b.
frozen water sublimates from ice and snow.
c.
liquid water is lost from tree leaves during evapotranspiration.
d.
all of the above.

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

Which of the following produces carbon dioxide? a. plants b. animals c. decomposers d. all of the above

1. seamount a raised footwall block between normal fault creates this 2. syncline break between rocks where a hanging wall rises relative to a footwall 3. hot spring on rolling hills, this a dip between hills 4. volcanic neck created when a block with hanging walls slips down between normal faults 5. caldera underwater volcano that never reaches above sea level 6. horst natural hot water on earth's surface containing many minerals 7. graben underwater volcano whose top is eroded flat by waves 8. crater less than a mile in diameter; looks like a bowl at the top of a volcano 9. guyot magma that filled the central vent that remains after the volcano has eroded 10. reverse fault over 1 mile in diameter; looks like a bowl over a volcano