What evolutionary adaptation allows elephants to migrate, meet, and mate over great distances?
A) echolocation
B) electroreception
C) magnetoreception
D) seismic detection
D
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The presence or absence of an envelope is not useful in classifying viruses because any given virus may at one time have an envelope and at another time not have an envelope.
Answer the following statement true (T) or false (F)
Which one of the following is believed to be the major event that led to the appearance of diverse, complex multicellular organisms on Earth?
A. the increase in atmospheric oxygen B. the appearance of animals C. the appearance of plants on land D. the appearance of bulk transport systems
The ability of predators to eat and digest prey determines the number of prey captured as is shown in ____
a. type I response only b. type II response only c. type III response only d. types I and II only e. types I, II and III
If all the people in the world were to live at the American level in terms of technology, wealth, education, and other factors, the population of the world would have to ________ to support them
A) decrease by 90% B) reduce to a fifth of the current level C) reduce by half D) double E) reduce to less than a tenth of the current level