About 15% of the world's coastlines are protected from erosion by____________________
Fill in the blanks with correct word
coral reefs
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In what kind of nighttime cooling are ground-level temperatures colder than temperatures above the ground?
The use of nuclear power throughout the world is generally
A) uneven, ranging from 0 to 74%, depending on the country. B) uneven, ranging from 3 to 22% in different countries around the world. C) consistent, with most developed countries generating most of the electricity with nuclear power. D) steadily declining, with most countries planning on phasing out their nuclear plants.
In Hawaii, the extinction rate of bird species is one species every 10-12 years. By comparison, bird species worldwide are being lost at a rate of approximately ________ per year
A) 1 B) 1000 C) 10 D) 0.1 E) 100
To calculate the physiological density of your state, you would ________.
Fill in the blank(s) with the appropriate word(s).