Which of the following resources do geologic ages help us explore?
a) mineral deposits relate to granites
b) oil and gas
c) groundwater
d) all of the above
e) a and b only
Ans: d) all of the above
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Why are the melting temperatures of most ionic compounds far greater than the melting temperatures of most covalent compounds?
A. Covalent bonds are not as strong as ionic bonds. B. Most covalent compounds have at least one weak bond in their structure that is easily broken when heat is added. C. Ionic bonds are so much stronger than the molecular attractions between covalently bonded compounds. D. As a solid, salts have a very organized crystalline structure which takes a lot of energy to break apart.
A tropical maritime air mass is likely to be ________
A) dry and cold B) dry and warm C) wet and cold D) wet and the same temperature E) wet and warm
An increase in greenhouse gas concentrations corresponds to a positive forcing.
Answer the following statement true (T) or false (F)
Elongated states may suffer from poor internal communication and difficulty defending its borders. Which of the following is not an elongated state?
A) Malawi B) Gambia C) Namibia D) Chile E) Italy