Continental collision may form rift valleys
a. True
b. False
Indicate whether the statement is true or false
False
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At any given time, how much of the Earth is illuminated by the sun?
A. one-half B. two-thirds C. one-third D. one-fourth
Acute toxicity differs from chronic toxicity in which of the following ways?
A. Acute toxicity has a low LD50. Chronic toxicity has a high LD50. B. Acute toxicity can occur with a single exposure. Chronic toxicity requires repeated exposures. C. Acute toxicity results in death. Chronic toxicity results in serious illness. D. All of these statements are correct. E. None of these statements is correct.
The Hudson River has been polluted with ________ from a facility that manufactures electrical transformers
A) DDT B) peat C) PCBs D) coolants E) solid waste
Folk life consists of cultural characteristics that are both tangible and intangible.
Answer the following statement true (T) or false (F)