Select the description of a population pyramid for a population that has the largest potential for exponential growth.
A. broad at the base, narrow at the top, with more males than females
B. broad at the base, narrow at the top, with more females than males
C. broad at the top, narrow at the base, with more females than males
D. uniform at all age classes, with more females than males
E. broad at the top, narrow at the base, with more males than females
Answer: B
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Organisms called parasites are ________.
A. always harmful to their host B. always viruses C. free-living D. the decomposers in ecosystems
What is the intensity of that color?
a. 25 b. 50 c. 75 d. 100
In the accompanying figure, what is the function of the structure that is labeled as 7?
a. maintaining sperm below body temperature
b. storing of mature sperm
c. producing prostaglandins
d. producing nutritive fluid to support active sperm
e. producing alkaline fluid to protect sperm in the vagina