Al 81 10. Find the ratios of the following pair of angles
(a) 45 and 90%
(b) 254 and 27
fe) 20-30 and 20-25 (d) 20*1020 and 27*15

How do the various countries in east asia meet their power needs? give specific examples

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.

5. what is a red giant? can our sun become a red giant? why or why not?