toefl quetion : If you could invent something new, what product would you develop? Im really impressed by invention and inventors however im a scientist and I usually ask some frequent questions : how can I add something to the sciences ? actually I used to think about a problem of of dirty which touch our environment deeply . and I felt that it has bad impact weather on humans and environments . so how can I solve it ? may I get a part of solution wich is an invention led people to clean their environment its like small container to receive garbage , coupled with an electronic device which enable people to put their finger print in , this option in order to recover cleaners and store their information eventually be awarded with some bonuses later. . . first I think that this invention is the best way to defeat uncleanness because it s a practical solution . people will be more motivated to take the action when they are promised to have some bonuses if they take the garbage to its formal location . in other hand this technical truck work to Coach people and train them selves ,by time they will be affected to do it randomly . moreover its abounded for all , regardless to the differences between individuals and their live style , where anyone can put its finger print on the electronic area in order to detect a cleaner identity in condition that he must make the garbage inside the container. second , . this t modern tool is considered as new fashion for people especially they are excited to discover any news and updates, reminding that the innovation becomes the first over the world and the opportunity of success will be more predated because if you do some thing special you ill have more chance to succeed and get more followers from all over the worlds . furthermore the main factor which inspire me to develop this idea is that im a scientist in mechatronics engineering .do i have a lot of backgrounds about this system and how does it work .basically the mechanism requires a lot of technical fields such as mechanics ,electronics and information system to sum it up , this project is the best choice for me if I get the opportunity to invent because it will rise a society from the uncleanness to the class and consequently will lead the community to more developpement and prosper neer future.