Having the gene for sickle cell hemoglobin gives an individual enhanced immunity against which of the following?
A) flu
B) malaria
C) polio
D) sleeping sickness
B
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Bowen's reaction series explains why Si-rich minerals are the last to crystallize from a magma Indicate whether the statement is true or false
Earth's core ____
A)is solid B)is liquid C)has both liquid and solid components D)is composed of minerals common at Earth's surface E)is thought to be composed largely of sulfur
What type of feature is shown in this photograph? A stream flows through the feature and was involved in its formation.
A. natural arch B. meteorite impact C. crescent dune D. natural bridge E. None of these choices are correct.
Which of the following processes is most important in sculpting the landscape shown in this photograph from the Investigation?
A. wind erosion B. stream erosion C. movement driven by gravity D. stream transport