In what way were humans influencing climate prior to the Industrial Revolution?
A) hunting and gathering excessively
B) gathering wood for individual cooking fires
C) alteration of ground cover for grazing and agriculture
D) releasing CO2 by burning large quantities of coal
C
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Which of the following is true of many antiseptics and disinfectants?
A) They are reducing agents. B) They are oxidizing agents. C) They are either oxidizing or reducing agents. D) They are neither oxidizing nor reducing agents.
Carbon has six protons; therefore, its mass number is six
a. True b. False
An unconformity is a buried ________
A) surface of erosion with older strata above and younger strata below B) fault or fracture with younger strata above and older strata below C) surface of erosion separating younger strata above from older strata below D) fault or fracture with older rocks above and younger rocks below