TOEFL TPO -1 Academic Discussion Writing Sample: This week, we’ll be discussing ways to address air pollution. One idea is introducing environmental taxes on air travel. Such taxes, also referred to as ecoological taxes or green taxes, are extra charges that get added to the price of airplane tickets. Money collected from these taxes could be invested in environmentally friendly technologies or in promoting either, cleaner modes of transportation. Do you think there should be an environmental tax on air travel? Why or why not? • LingoLeap