Nowadays people are more aware that wildlife all over the world is in (17) ________. Many species of animals are threatened, and could easily become (18) _______ if we do not make an effort to protect them. There are many reasons for this. In some cases, animals are hunted for their fur or for other valuable parts of their bodies. Some birds, such as parrots are caught (19) ______, that their habitats – the place (20) ________they live – is disappearing. More land is used for farms, for house and industry and there are fewer open spaces than there once were. Farmers use powerful chemicals to help them grow better crops, but these chemicals pollute the environment and (21) _______ wildlife. The most successful animals on Earth, human being, will soon be the only ones (22) ____ unless we can solve this problem.