This region supplies most of the oil, natural gas, coal and diamonds used in Russia.
A. Siberia
B. the Lower Volga
C. the heartland
D. the six federal krays
A. Siberia
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When compared to land, how does water heat cool off?
A. at same rate B. more slowly at first, and then more quickly C. more slowly D. more quickly
A positive magnetic anomaly could indicate
A. the presence of a granitic basement high B. a body of magnetic ore C. an intrusion of gabbro D. the magnetic field strength is higher than the regional average E. All of these choices are correct.
Match the items below with their correct description from the list a through f
a. essentially nontoxic d. very toxic b. slightly toxic e. extremely toxic c. moderately toxic f. supertoxic 1. mercury 2. water 3. ethyl alcohol 4. heroin 5. mushroom toxin 6. nerve gas 7. DDT 8. atropine 9. codeine 10. nicotine
What is the main difference between condensation polymers and addition polymers?
A. The number of atoms incorporated into the condensation polymer increases compared to the starting monomers. B. Condensation polymers all lose water molecules when they form. C. The number of atoms incorporated into the addition polymer increases compared to the starting monomers. D. The condensation polymer has less atoms in it than the sum of the starting monomers because a small molecule is lost during condensation. E. All of the above are true.