The blood-brain barrier is permeable to which of the following species?
A) Cl-
B) alcohol
C) Na+
D) none of these
B
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The energy release in a fire strongly depends on the volume of material consumed, but not on the chemical composition of the plants and organic debris.
Answer the following statement true (T) or false (F)
Which of the following countries is a perforated state?
A) Nigeria B) Kosovo C) Italy D) Germany E) Canada
The philosophy of classical economics developed by Adam Smith ________
A) assures equality between rich and poor B) advocates free-market policies that many credit for the tremendous gains in material prosperity of industrial nations C) proposes maintenance of economies through government restraint and regulation D) was adopted by the Aborigines in the Kakadu region of Australia E) argues that individuals acting in their own self-interest harm society
The rainfall of the tropical savanna climate is most likely to be ____
a. concentrated in the low-sun period b. unreliable over the year c. over 100" a year d. largely orographic in origin e. roughly constant year-round