1 Masdar city is a really clean city. they decided to build it because they knew the oil will eventually run dry. 2 some features are them being energy effcent, renewable energy, and recycling. 3 it is too expensive and will take to long to complete.the author believes it will still be done because it is already 15% done

1. they were unable to play soccer at night because there was no light. now shell has helped turn on lights and kids can now play soccer. 2.it will give the kids an opportunity to play and have fun even at night. 3.they have been installed in new york in a school to power lights

1 if it helped to do math minute. so teachers know if they should give kids math minutes. 2they took kids and tested them. ther age group was 7 to 9. 3 it does help you. he plans to find ways for kids with math lerning disabilities to do better in math.

1. ciara judge, emer hickey, and sophie healy deserved the prize because they tackled the most difficult problem in the world... World hunger 2.ciara judge, emer hickey, and sophie healy, they worked on world hunger 3. she solved pollution. she won $15,000 scholar ship and $5,000 for her school

1 they involve expensive and complicated methods. this is different because it is easy to make.

2 it is easier to get the materials and an easier method.