This document discusses environmental problems and their causes. It notes that traffic fumes are damaging the ozone layer and air pollution causes illness. It also mentions that the world population is growing rapidly, some people do not have enough food, and many animal species are dying out or endangered. It states that we depend too much on fossil fuels and throw away too much rubbish. The document explores causes like not investing enough in renewable energies and cities creating more pollution. It provides compound noun corrections and discusses revision of quantifiers.