Eight of the 11 species of large, hunted whales are considered to be commercially extinct. Indicate whether the statement is true or false
ANS: T
The whaling industry did not heed warning signs of whale population declines. They were more
interested in the immediate profits of whaling. Information can be found in the section Biological
Resources.
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Salt-crystal growth (salt weathering) is an example of ________ weathering processes
A) only chemical B) only biological C) only physical D) both biological and physical E) both biological and chemical
Which mineral property is the least useful for identifying minerals, and why?
a. Color is the least useful property for identification because it is the most obvious property. b. Streak is the least useful property for identification, as the same mineral type can be found with several different colors of streak due to impurities in the mineral. c. Density is the least useful property for identification because different specimens of the same type of mineral can vary in size. d. Color is the least useful property for identification, as the same mineral type can be found in several different colors due to impurities in the mineral. e. Streak is the least useful property for identification because it does not work for minerals with metallic lusters.
What is the political status of Puerto Rico?
A) It is a possession of the United States, but its residents are not U.S. citizens. B) It is a colony of Spain. C) It is a commonwealth of the U.S. and its residents can move freely to the U.S. mainland. D) It is a state of the Republic of the Greater Antilles. E) It is an independent country.
The extremely deep ocean Marianas Trench is a result of
What will be an ideal response?