What is the definition of metasomatism?
A) The rearrangement of ions already present due to changes in heat
B) The lengthening of mineral crystals due to directed pressure
C) The change in chemical composition because hot fluids are bringing or removing ions
D) The more compact organization of mineral crystals due to confining pressure
Answer: C
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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.
The phrase “survival of the fittest” has often been used to describe the theory of natural
selection Indicate whether the statement is true or false.
What does a total fertility rate that is less than 2.1 indicate?
A) that a population has no natural growth B) that a population is growing slowly C) that a population is growing quickly D) that a population has reached its peak E) A TFR that is less than 2.1 has no particular significance.
Dams have a shelf life.
Answer the following statement true (T) or false (F)