The number of births per female of age x is referred to as the

A) crude birthrate.
B) age-specific birthrate.
C) gross reproductive rate.
D) net reproductive rate.


B

Biology & Microbiology

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What percentage of carbon's orbitals are spherical in conformation?

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What will be an ideal response?

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The full range of electromagnetic energy is called the ________ spectrum

A) visible B) electromagnetic C) energy D) ultraviolet

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How many viroids are known to cause diseases in commercially valuable plants?

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