tharika vahanan
tharika vahanan answered question
The warming of the earth caused by the green house gases is called global warming . The main green house gases are methane (CH4),H20, carbon dioxide (Co2), etc So these are produced mainly due to the excess amount of smoke and pollution produced by the factories and industries , we should try our level best to control and prevent … Read more
tharika vahanan
tharika vahanan answered question
Cell phones are not allowed in schools because , we come to school for studying and whenever the phone rings , the other students ,the class,and the teacher get disturbed Some students listen to musics ,chat and take photos in the school ......so the students should not carry mobile 
tharika vahanan
tharika vahanan answered
Science and technology is very much useful in games and sports as well. Video games are one of the means of entertainment for young kids .So it is only with the help of science . It can be proved by a model of a car and a track .