Between the years of 1985 and 2005 the total number of sea otters:
a. Increased by approximately 200%.
b. Increased by approximately 50%.
c. Increased by approximately 100%.
d. Stayed the same.
Answer: c. Increased by approximately 100%.
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Non-native or invasive species are threatening and should be eradicated.
Answer the following statement true (T) or false (F)
The ocean floor topography is
A. varied. B. unknown. C. smooth. D. flat.
All of the cities described below are in North America and are classified as humid continental climates. Which city has the highest total rainfall?
A) city A, a leeward coastal city at 40 degrees north latitude B) city B, a city in the interior of the continent at 40 degrees north latitude C) city C, a city in the interior of the continent at 50 degrees north latitude
Which of the following has the lowest boiling point?
A) acetone B) formaldehyde C) 3-octanone D) cyclopentanone