The mass extinction in the geologic record, which proved to be the most devastating to life on Earth, occurred at the
end of the ____.
a. Cambrian
b. Cretaceous
c. Devonian
d. Ordovician
e. Permian
e
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If all of the stratospheric ozone suddenly disappeared, ________
A) plants would flourish B) insects would be the only organisms to survive C) Earth's surface would warm considerably D) there would be a dramatic decrease in skin cancers E) most life on Earth would cease to exist because of the amount of UV radiation penetrating the atmosphere
Explosive volcanoes that cause death and destruction are more likely to be composite cone volcanoes
Indicate whether the statement is true or false.
Large-scale ________ of Earth materials will be required to meet future resource demands
Fill in the blank(s) with correct word
Which of the following is NOT an intrusive volcanic landform?
a - dike b - batholith c - sill d - vein e - caldera