A star having the same mass of Earth's Sun is likely to first evolve into a ________ before becoming a ________.
A) white dwarf; red giant
B) red giant; protostar
C) red giant; white dwarf
D) black hole; neutron star
Answer: C) red giant; white dwarf
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The first essential step in changing atmospheric nitrogen into more usable NH3 is called ________
A) N-fixation B) ammonification C) biogeochemical cycling D) denitrification E) nitrification
The amount of water in aquifers in the United States is
A. About the same amount as all surface water in the United States B. Only a small portion of surface water in the United States C. Over thirty times greater than all surface water in the United States D. Nearly as great as the amount of surface water in the United States E. Higher than all the Great Lakes together
What minority population, located in western Burma, is often referred to as the "most persecuted ethnic group in the world"
A) Shan B) Karen C) Rohingya D) Tamil E) Khmer
Agricultural density is the ratio of farmers to the total population
Indicate whether this statement is true or false.