Те write the names of five things that : 1. people can do now, but couldn't do 100 years ago, 200 years ago ; 2. people will be able to do 100 years from now; 3. may change the face of the earth completely 4. might help to make the encological situation better 5. might destroy the life on our planet.

1. People can do now, but couldn't do 100 years ago, 200 years ago ;-play computer games
2. People will be able to do 100 years from now; -cure some diseases that can't be cured nowadays
3. May change the face of the earth completely-rubbish
4. Might help to make the encological situation better -ecological (on solar energy)cars
5. Might destroy the life on our planet.-waste from factories