What is the role of ozone in the ozonosphere? Discuss and explain the chemical reactions that lead to its destruction
What will be an ideal response?
In a nutshell, stratospheric ozone protects the Earth from harmful UV radiation. Through a complex set of chemical reactions, CFCs and other ozone-destroying chemicals destroy ozone.
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Which statement describes turbidites?
A) They are graded layers of terrigenous sand mixed with finer pelagic sediments. B) They are propelled into position by gravity rather than water currents. C) They are composed of distinct layers that represent various turbidity current events. D) All of these choices are true about turbidites.
Approximately ________ countries are currently experiencing water shortages
A) 5 B) 10 C) 80 D) 165
Crater Lake, Oregon, is an example of a volcanic ________
A) lava flow B) peak C) caldera D) batholith E) neck
Which of the following techniques for cleaning up an oil spill has been most successful?
A. sinking the ship that is the source for the leaking oil B. burning the fuel by setting it afire or using explosives C. seeding the oil with microorganisms or adding limiting nutrients to stimulate natural microorganisms that degrade the oil D. steam-cleaning the beaches