Off the southern coast of Iceland, the small volcanic island of Surtsey first emerged above sea level in 1963
By 1970, plants, mosses, and lichens had colonized the island, and by 2008, over 50 species of plants were on the island, and birds and seals had begun using the island as well. The ecological changes that have occurred on this new island represent ________.
A) disturbances B) primary succession
C) resilience events D) secondary succession
B
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The most important pull factor for migrants to North America today is
A) economic. B) environmental. C) forced. D) political. E) geomagnetic.
Abbreviated term for Hominidae, the family that includes bipedal primates such as
Australopithecus and Homo:a. hominoid d. Neanderthal b. hominid e. Cro-Magnon c. anthropoid
The European Union is an example of a free-trade agreement
Indicate whether the statement is true or false
Which of the following are examples of fault-block mountains?
A) Himalayas B) Rocky Mountains C) Basin and Range D) Alps