Cancer
A. is primarily an inherited, and not an environmental, disease.
B. usually involves a mutation in the BRCA genes.
C. is usually caused by a single mutation in a key gene.
D. is more likely to develop in older people.
Answer: D
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A projectile is fired horizontally in a region of no air resistance. The projectile maintains its horizontal component of speed because
A) it is not acted on by any forces. B) it is not acted on by any horizontal forces. C) it has no vertical component of speed to begin with. D) the net force acting on it is zero. E) none of the above
A shale that is subjected to moderate metamorphism may become a slate. Indicate whether the statement is true or false
Ocean currents play a significant role in helping to equalize the heat imbalance between the tropical and polar regions
Indicate whether the statement is true or false
Which of the following is a rotating, low-pressure weather system with a warm core that generally forms over warm seawater between 5° and 20° latitude and then travels off to deliver its heat to higher latitudes?
A. typhoons B. southern Hemisphere cyclones C. hurricanes D. All of these choices are correct.