Malaria
A. cannot be prevented by a vaccine.
B. is caused by a parasite transmitted in mosquito bites.
C. is most prominent in colder climates.
D. control is impossible to implement with antimalarial drugs.
E. cannot be prevented by spraying mosquitoes with DDT.
Answer: B
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Why do earthquakes of similar size often have such large differences in their destructiveness? Why are they so different in the number of people they kill?
The process of assimilation ____
A)includes melting and incorporation of inclusions of country rock B)includes the inclusion of country rock in an extrusive magma C)occurs in all plutons D)results in additional heating of a magma body E)separates mafic rock from felsic rock
A soil with a pH of 4 would be considered alkaline
a. True b. False Indicate whether the statement is true or false
____________________ are distinct layers in well-developed soils
Fill in the blank(s) with correct word