Complete the second sentence in each pair so that it means the same as the first one

Complete the second sentence in each pair so that it means the same as the first one .
1. why don't we ask for advice on saving energy ?
-we............
2. nuclear power is cheap to use , but it's very expensive to build a power plant .
-although it's ..............
3. people in richer countries live longer because they have better diets and healthcare .
-..........................because of ..............................
4. the reason people use coal and oil less and less is to educe pollution.
-because people want .............
5. there's less disease thanks to great changes in people's eating habits .
-people greatly change ...................... , so ................
6. having a higher birth rate death rate can cause overpopulation .
-....................................than birth rate can cause overpopulation.
7. good diets and healthcare help increase life expectancy .
-with the help of .................., people .............
8. there is beef and mushrooms in his favourite dish .
-his favourite dish .................from...............
9.we have several ways of producing energy without destroying the environment .
-there.............
10. let's build more green schools vietnam .
- we should ...............