Consider why solar energy is a good source of energy for:
* (a) Developed countries
(b) Developing countries.

What major factors play a role in global warming? 1. human activity and normal climate conditions 2. natural factors and human activity 3. normal climate conditions and abnormal human activities 4. abnormal human activities and natural factors

Brian's school locker has a three-digit combination lock that can be set using the numbers 5 to 9 (including 5 and 9), without repeating a number. the probability that the locker code begins with a prime number is %. the probability that the last digit of the locker code is an odd number is %.

The nations of indochina a. share a common langauge b. share a common history c. share a common religion d. none of the above