Birthrate is which of the following?
a. Number of births per family.
b. Number of births per man.
c. Number of births per couple.
d. Number of births per woman.
Answer: d. Number of births per woman.
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The Silk Road connected
A. China and India B. New York and Chicago C. China and Rome D. London and Paris
A horse exerts 500 N of force on a heavy wagon. The wagon pulls back on the horse with an equal force. The wagon still accelerates because
A) these forces are not an action-reaction pair. B) there is nevertheless still an unbalanced force on the wagon. C) the horse pulls on the wagon a brief time before the wagon reacts. D) the wagon does not accelerate because these forces are equal and opposite. E) unlike the horse, it is not alive.
Once living organisms reach a balance with their environment, they do not undergo any more natural
selection. Indicate whether the statement is true or false.
Which country of Europe has a large Muslim migrant population?
A) Ireland B) France C) Switzerland D) Lithuania E) Poland