Which of the following happens when a new island arises from the ocean and life begins to colonize the island?
A) coevolution B) primary succession
C) secondary succession D) competitive exclusion
Answer: B
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Why is the development of bipedalism considered to be a major advancement in human evolution?
What will be an ideal response?
The Ngorongoro Conservation Area is an example of ____
a. conservation through preservation, with people completely excluded b. conservation through preservation, with people allowed only as temporary visitors c. mixed use conservation, with some human residents and livestock grazing d. mixed use conservation, with no human residents and limited livestock grazing e. conservation through restoration, with efforts to remove contaminants underway
Which of the following is true regarding some insect tracheal systems?
a. They are associated with the blood circulatory system. b. They excrete body wastes as well as transport gases. c. Their spiracles can become clogged by spraying them with oil. d. The tracheal tubes are continually open in large terrestrial insects. e. They contain respiratory pigments to enhance oxygen transport.
Which statement is true regarding trichomoniasis infection?
a. It is the least curable STD. b. It is caused by a protozoan. c. It cannot cause infertility. d. It has obvious symptoms. e. It typically goes away on its own.