Endangered Species - Vocabulary

Match the words with their definitions. There are TWO words you do not need.
to get used to a situation
the fat of a whale
person who works to protect endangered animals and plants
the world and all of nature around us
to start something new
plant that grows on the ground or on other plants
natural home of a plant or animal
small animal or insect that destroys farm plants
when air, water or the ground gets dangerously dirty
a group of animals or plants that are alike