Most biogenic sediments consist of tiny shells called microfossils that are made of what two substances?
a) CaCO3 and MnO2
b) SiO2 and MnO2
c) SiO2 and CO2
d) CaCO3 and SiO2
e) CaCO3 and Fe3O4
D
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Which of the following is not part of the climate system?
A) biosphere B) gyrosphere C) geosphere D) hydrosphere E) cryosphere
Which of the following is a universalizing religion?
A. Hinduism B. Buddhism C. Judaism D. Animism
The primary cause of a radiation inversion is:
a. infrared radiation emitted by the earth's surface. b. infrared radiation absorbed by the earth's surface. c. solar radiation absorbed by the earth's surface. d. solar radiation reflected by the earth's surface. e. infrared radiation absorbed by the atmosphere and clouds.
What do the minerals gold, sulfur, and talc have in common?
A) They are yellow in color. B) They are used almost as they are when removed from the ground. C) They are soft in texture. D) They are expensive to purchase.