The age structure data for Nigeria shows that the country has many more individuals under the age of 15 than over the age of 40. What does this imply about the future population of Nigeria?
A) the population will probably remain stable
B) the population will probably decrease
C) the population will probably grow rapidly
D) the population will probably increase, but slowly
E) the number of older people will probably increase rapidly
Ans: C) the population will probably grow rapidly
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The neuron transport proteins that maintain the
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Blanks “A” and “B” should be labeled respectively
a. does not drink; loss b. does not drink; gain c. drinks; loss d. drinks; gain e. none of these
Pseudocoelomates have a body cavity that is not completely lined with __________. These animals
include __________ and roundworms. a. endoderm; nemerteans b. endoderm; flatworms c. mesoderm; rotifers d. mesoderm; flatworms e. mesoderm; nemerteans
A single carbon atom can form a maximum of ________ covalent bond(s)
A) 0 B) 1 C) 2 D) 4