Which of the following materials is most likely to undergo oxidation?
A. Na
B. Na+
C. Cl2
D. Cl-
E. both A and B
Answer: A
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Organisms that feed on both plants and animals are called
a. detritus feeders b. Omnivores c. Carnivores d. herbivores e. decomposers
The H1N1 flu virus is common in ________ but rarely transmitted to humans until recently
A) pigs B) waterfowl C) mosquitoes D) poultry E) birds
Unlike in the United States
A) hostility to immigrants is politicized in Europe. B) migrants take on low status and low skill jobs in Europe. C) Europe's foreign born population exceeds 10 percent. D) population growth is fueled by immigration. E) migrants are blamed for higher welfare costs and crime rates.
One way scientists can study human migration pathways is by using ____ pathways
a. climate data b. DNA c. glacial ice d. water footprint e. fossil