The metal(s) that is/are most important in global economies is/are
A. Marble
B. Halite
C. Cadmium
D. Iron
E. All are important metals in the global economy
Answer: D
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Each night you measure your height just before going to bed. When you arise each morning, you measure your height again and consistently find that you are 1 inch taller than you were the night before but only as tall as you were 24 hours ago! Is what happens to your body in this instance best described as a physical change or a chemical change?
A. physical change because it readily reverses B. chemical change because it involves changes in your bone structure C. physical change because water expands as it freezes D. chemical change because it involves your body
Blowing a threatening extraterrestrial object into small pieces would likely increase the hazard to Earth
Indicate whether the statement is true or false
What happens to the mRNA when it binds to the two ribosomal bodies?
A) Nothing, it retains its original three-dimensional shape. B) It forms a double helix. C) It is stretched out. D) It splits into two parts, each of which is associated with a ribosomal unit.
________ tides occur at the first quarter moon.
A. Spring B. Mixed C. Semidiurnal D. Neap E. Diurnal