HELP An alien civilization has different names and symbols for six elements.

Which of the following describes what an activator an enhancer are

Urban areas use energy than rural areas, mostly because so many more people live there. a) solar power b) more; in total c) less; in total d) an electric furnace

Can nonrenewable resources be used sustainably?   a. yes, nonrenewable resources are always beneficial for the environment  b. no, there are only negative effects of using nonrenewable resources  c. no, there's a finite amount of nonrenewable resources  d. yes, as long as use doesn't exceed availability is the correct answer   d. yes, as long as use doesn't exceed availability