All silicate minerals contain the elements silicon and ____
A)hydrogen
B)helium
C)carbon
D)sodium
E)oxygen
E
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U.S. population reached 300 million by the year 2000
Indicate whether the statement is true or false
What information do you need to calculate the pressure (weight) of a column of rock? Calculate the pressure at the base of oceanic and continental crust for columns of rock that are one square meter in area at the surface
What will be an ideal response?
Wind direction is
a. ?the direction from which the wind is blowing. b. ?the direction to which the wind is blowing. c. ?always directly from high toward low pressure.? d. ?always directly from low toward high pressure. e. ?the vertical displacement of air.
Which statement most accurately describes the population control efforts in China?
A) Changing public attitudes about family size through communication, education, counseling, and contraceptives can reduce the population growth rates. B) There is minimal governmental financial support for birth control for all couples. C) Increasing child survival, elevating status and employment levels for women, and increasing literacy in the general population will decrease fertility rates. D) A one-child policy that is enforced through taxation and penalties works best for controlling population. E) A one-child policy that requires all women to work and education for all decreases fertility rates.