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18 Complete the web comment with the correct words in the box.

sources fossil habitats rid pollution tipping endangered landfill

The environment is being threatened in a number of ways. Through extensive building of roads and houses, we are destroying natural (1)  habitats for many animals and there is an increasing number of (2) endangered species that need our protection. Our countryside is being ruined by fly-(3)tipping and getting (4)  rid of our rubbish is causing even more problems because most of the (5) landfill and sites are full. Our use of (6)  fossil fuels over the last hundred years or more has resulted in both air and water (7) pollution and our search for new energy (8) sources could cause even more. These are only a few of the threats to environment. There are many, many more. We would like to hear from you on this subject. Which environmental problem worries you the most? Please post your comments below.