Which one of the following is not an advantage of solar energy?
A. It is essentially pollution-free.
B. It is available at no cost.
C. It is an inexhaustible resource.
D. It is a widely dispersed resource.
Answer: D
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Why might a small piece of chalk made of calcium carbonate be useful for alleviating acid indigestion?
A) Calcium carbonate is a base that reacts to neutralize any excess acids. B) Calcium carbonate is able to absorb excess acid and carry it out of the system. C) Calcium carbonate is able to add an extra lining to the stomach to protect it from the excess acid. D) Calcium carbonate is able to turn the acid into a gas which can relieve the build-up of excess acid.
A tectonic plate can consist of continental crust or oceanic crust, but not both
a. True b. False
What is the point of subsurface origin of an earthquake called?
a. focus b. ground zero c. epicenter d. scarp e. nexus
The ability of an ecosystem to recover quickly from a disturbance and return to its original state is known as
A) punctuated equilibrium. B) resilience. C) vicariance. D) succession.