The volcano(s) is/are still active.
a. tepanapa
d. a and c
b. popocat petl e. b and c
c. ixtacc huatl

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.

This word for a bug or malfunction was popularized in the 1962 book into orbit by the mercury astronauts

The ratio of the measures of the three angles in a triangle is 14: 15: 11 find the measures of the angles