Mutation of the V(J)D genes in somatic cells results in which of the following?
A) a failure of the immune system
B) a decrease in the binding of an antigen to an antibody
C) a small increase in the binding of an antigen to an antibody
D) a significant increase in the binding of an antigen to an antibody
D
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The Industrial Revolution resulted in economies that were based less on ________ and ever more ________
A) wealth; impoverished B) urban areas; rural C) agriculture; urban D) slavery; on freedom
In 1887, Ralph Abercromby and Hugo Hildebrandsson expanded Howard’s original cloud classification system and published a classification system that, with only slight modification, is still in use today. In their system, ____ principal cloud forms are divided into ____ primary cloud groups
a. ?eight; two b. ?nine; three c. ?ten; four d. ?eleven; five e. ?twelve; six
A(n) ____________________ beach commonly accumulates at the base of a sea cliff along erosion-dominated coastlines
Fill in the blank(s) with correct word
Most earthquakes occur along
A. major rivers. B. lines parallel with Earth's magnetic field. C. continental margins. D. plate boundaries.