A 50 kg bear climbed on the tree branch 10 meters above the ground. If the bear descends to 5 meters above the ground, its potential energy will be decreased by
some fallacies that could be used for middle school students would be that "everyone thinks that the are cool", "these clothes are trendy", "Your grandmother would even love these clothes"
b can't work because there are no animal related things in there c is not correct because it is not only water and d cannot work because only one part are the gates
