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?
A. 0% B. 20% C. 40% D. 80% E. 100%
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How many viroids are known to cause diseases in commercially valuable plants?
a. 12 b. 46 c. 68 d. 22 e. 30
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Consider the Calvin–Benson cycle and the noncyclic photosynthetic pathway. Why is the cyclic pathway so important?
What will be an ideal response?
Biology & Microbiology
The full range of electromagnetic energy is called the ________ spectrum
A) visible B) electromagnetic C) energy D) ultraviolet
Biology & Microbiology