Investigate what type of facial expressions infants can mimic And just how younger they begin to mimic them. (A whole new child brother or sister will be helpful) Reveal the greenhouse effect by measuring the temperature within a gentle trap (box covered with glass or plastic). Make an energy check http://computersciencehomeworkhe77890.ezblogz.com/7095209/how-computer-science-homework-help-can-save-you-time-stress-and-money