Which of the following choices would most likely promote random distribution?
A) territorial species
B) species that secrete chemicals to attract or inhibit other individuals
C) flocking and schooling behaviors
D) spacing during the breeding season
E) homogeneous chemical and physical factors in the environment
Answer: E
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Four of the five answers listed below are fat soluble vitamins. Select the exception
a. vitamin A b. vitamin C c. vitamin D d. vitamin E e. vitamin K
Which of the following would be an example of an organism that provides direct benefit by consumptive use value?
A. rice B. armadillos C. rosy periwinkle D. trees E. wheat
The pace of evolution does not always occur at a constant rate but is periodically interrupted by rapid bursts of speciation; this is known as ________.
What will be an ideal response?
Norway rats (Rattus norvegicus) and roof rats (Rattus rattus) are different species. Occasionally, mating occurs if the two species are kept together in captivity. The resulting pregnancies are not successful and the embryos die. This is an example of
A. mechanical isolation. B. lack of F2 fitness. C. hybrid sterility. D. hybrid inviability.