In Fairbanks, Alaska, the average annual temperature for the year 2019 was 31.2 degrees F. The average annual temperature for the years 1951-1980 was 26.7 degrees F. Calculate the temperature anomaly for the year 2019 for Fairbanks.

Which of the following is not a challenge to instituting sound global environmental policies? a. most changes are inexpensive and easy to implement. b. elected leaders who support unpopular environmental issues often are not re-elected. c. economic considerations outweigh environmental ones in many societies. d. there is no way to enforce international environmental agreements.

If a volcano’s magma is high in silica, the volcano will probably a. erupt quietly. b. remain dormant. c. erupt explosively. d. produce dark-colored lava.

How does sea floor spreading relate to supercontinents?