sentences: a wooded area is a kind of forest & a forest is a kind of environment ->  a wooded area is a kind of environment  a wooded area is a kind of environment & humans changing an environment sometimes causes that environment to be destroyed ->  humans changing a wooded area causes that wooded area to be destroyed  humans changing a wooded area causes that wooded area to be destroyed & clearing an area is a kind of method for changing an area ->  clearing a wooded area causes that wooded area to be destroyed  an animal requires a habitat for survival & a tree is a kind of habitat ->  a tree is a kind of animal habitat  a tree is a kind of animal habitat & a wooded area contains lots of trees ->  a wooded area contains lots of animal habitats  clearing a wooded area causes that wooded area to be destroyed & a wooded area contains lots of animal habitats -> clearing a wooded area causes animal habitats to be destroyed