9. conservation
A. talking
B. expense
C. energy
D. protection
8. expertise
A. capacity
B. method
C. price
D. skill
7. solution
A. a means of getting money
B. a means of talking
C. a means of solving a problem
D. a means of entering a space
6. access
A. a means of talking
B. a means of getting money
C. a means of entering a space
D. a menas of solving a problem