Since 1975, the Earth's average atmospheric temperature has risen about _____ degree(s) Fahrenheit. To answer, use text and not a number. For example, use "five" and not "5".
Fill in the blank(s) with the appropriate word(s).
one
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What challenges are faced by coral reefs today? What is the advantage of living in the tropical ocean
which contains few nutrients? Hint: include reference to the National Geographic segment about the Southern Line Islands What will be an ideal response?
Which of the following is not true?
a) The Antarctic ice sheets are in constant motion. b) Antarctica can be thought of as a continent covered by a single enormous glacier. c) About half of the Arctic sea-ice volume has disappeared since 1979. d) The Arctic is a large landmass surrounded by a cold ocean. e) The Antarctic is generally colder than the Arctic.
The world's potentially farmable land is estimated to be about ________ the present cultivated area
A) twice B) four times C) eight times D) sixteen times E) thirty-two times
Boreal forests are also known as ____
a. taiga b. tundra c. patterned ground d. El Niño