The crust and the lower mantle comprise the rigid lithosphere.
a. true
b. false
Ans: b. false
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The main component of bleach is sodium hypochlorite, NaOCl, which consists of sodium ions, Na?, and hypochlorite ions, -OCl. What products are formed when this compound is reacted with the hydrochloric acid, HCl, of toilet bowl cleaner?
A. The products are NaCl, O2, and HClO2. B. The products are NaCl and HOCl. C. The products are NaOH, H2O, and Cl2. D. The products are NaOH, O2, and Cl2.
Natural selection refers to the survival of organisms that are best adapted to their environment. Indicate whether the statement is true or false
Which of the following would involve the greatest change in atmospheric pressure?
A) horizontal airplane flight of 200 miles B) balloon ascent from sea level to 3 miles C) difference between the highest and lowest recorded pressure at any one weather station D) travel from center of a low pressure system to center of a high pressure system
Why does magma rise toward the Earth's surface?
A) because it is a liquid B) because it is hot C) because it is immiscible and cannot combine with the material around it D) because it is less dense than the material around it