The Paracel Islands are in the ________ part of the South China Sea
A) northern
B) southern
C) southeastern
D) southwestern
A
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When you shake fish food into in an aquarium, you are contributing to a(n)
A. open system. B. closed system. C. negative feedback system. D. positive feedback system.
Despite the International Whaling Commission ban on commercial whaling which of the following nations continues to hunt whales under the guise of scientific research?
A) Greenland B) Japan C) Norway D) Russia E) United States
Regarding the federal Lead-Based Paint Hazard Reduction Act, which statement is TRUE?
a. all residential housing built before 1978 must be tested for the presence of lead-based paint before being listed for sale or rent b. a disclosure statement must be attached to all sales contracts and leases involving residential properties built before 1978. c. a lead-hazard pamphlet must be distributed to all prospective buyers but not to tenants d. purchases of housing built before 1978 must be given five days to test the property for the presence of lead-based paint
In order for an atom to substitute for dominant atoms in a crystal structure, and therefore alter its color, what must occur?
A) The atom must be similar in size to the crystal's atoms. B) The atom must have the same charge as the crystal's atoms. C) The atom must be close in electronegativity values to the crystal's atoms. D) The atoms must be close to each other on the periodic table of elements.