If the human population continues to grow as expected, it will reach ________ by the year 2050.
A. 10 billion
B. 25 billion
C. 12 billion
D. 15 billion
Answer: A
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The Milankovitch theory explains the onset of glacial epochs as a result of major plate tectonic
activity. Indicate whether the statement is true or false.
In the dark-light bottle experiment, which one of the following is measured in the dark bottle?
A. decomposition B. chlorophyll concentration C. photosynthesis plus respiration D. respiration E. photosynthesis
Given the reaction 2 HgO(s) ? 2 Hg(l) + O2(g). What weight of elemental mercury will be obtained by the decomposition of 0.125 mol of HgO
A) 13.5 g B) 25.0 g C) 27.0 g D) 50.0 g
When solutions of H2SO4 and NaOH react, the balanced molecular equation is: H2SO4(aq) + 2 NaOH(aq) ? Na2SO4(aq) + 2 H2O(l) How much Na2SO4 is obtained when 4.00 g of H2SO4 reacts with 4.00 g of NaOH?
A) 2.98 g B) 5.80 g C) 7.10 g D) 8.00 g