Which of the following sets of characteristics is typical of an r-strategist?
A. The population size tends to be strongly influenced by extrinsic limiting factors.
B. The organisms tend to be small and have short life spans.
C. The population tends to grow for a period and then crash followed by another growth period.
D. All of these responses are correct.
E. None of these responses is correct.
Answer: D
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Which Middle Eastern state is a major economic partner with India?
A) Qatar B) United Arab Emirates C) Saudi Arabia D) Kuwait E) Iran
The system responsible for defense against disease and harmful substances is the
A. circulatory system. B. endocrine system. C. immune system. D. excretory system. E. reproductive system.
Why is the ability to bioluminesce beneficial?
a) food may be found even in the darkest parts of the ocean or at night b) signals may be sent out to communicate an interest in mating c) the light may momentarily distract predators, allowing the organism a chance to escape d) it can camouflage the underbelly of the fish by lighting it up the same color as the sea surface so that the fish will be almost invisible to predators swimming below e) all of the above
Why is a longer historical record of peak discharge preferred for a given river when determining the
statistical recurrence interval for flood events? What will be an ideal response?