Which has a higher population density (2010 data)?
A. Boston, MA, Population: 0.63 million, Area: 48 square miles
B. Dallas, TX, Population: 1.22 million, Area: 340 square miles
C. Houston, TX, Population: 2.15 million, Area: 634 square miles
D. San Diego, CA: Population: 1.33 million, Area: 325 square miles
Answer: A
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In a battery, the following two oxidation-reduction reactions are taking place: rxn A: Zn ? Zn+2 + 2e- rxn B: 2 NH4+ + 2e- ? 2 NH3 + H2Which reaction is taking place at the anode?
A. Both reactions are happening at both the anode and cathode. B. The reaction takes place at the electrode, not the anode. C. Both reactions are happening at the electrode. D. rxn B E. rxn A
The tropical wet-and-dry climate is influenced mainly by the ____
a. polar front and the subtropical highs b. polar front and the ITCZ c. subtropical highs and polar front d. ITCZ and subtropical highs e. subtropical highs and polar lows
Migration has never been a constant part of human history
Indicate whether the statement is true or false.
Which of the following statements describes the region known as the intertropical convergence zone (ITCZ)?
A. It is where northeast trades meet the southeast trades. B. It is where the polar front meets the subtropical high. C. It is where northeast trades converge with the subtropical high. D. It is where the Ferrel cell converges with the Hadley cell.