Mark the statements as true, false, or not stated.

1. Kate is always quiet while doing homework. [True] 2. Kate's mum wants to help her with homework. [True] 3. There are important reasons to save Antarctica's nature. [True] 4. People hunt and kill only rare and endangered species. [False] 5. Waters near Antarctica are not polluted. [False] 6. Recycling is the only way to save Antarctica's nature. [False]