The key characteristic of a malignant tumor is that such a tumor
a. does not require surgery.
b. cannot cause brain damage.
c. has a distinct border.
d. spreads rapidly through infiltration of adjacent tissue.
e. can give off cancerous cells that in turn reach distant sites.
Answer: e. can give off cancerous cells that in turn reach distant sites.
Psychology
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Research on the imaginary audience suggests that
A) teens show off even if no one is looking. B) often others really are watching and judging. C) risky behavior is more likely in the company of peers. D) young adolescents are more egocentric than older adolescents.
Psychology
In what is called the Flynn effect, over the last 60 years average IQ scores
A) have increased steadily. B) have dropped steadily. C) have stayed constant. D) have varied unpredictably.
Psychology