Unit 6: Crazy about wildlife!

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Across
  1. 4. Dinosaurs are ______ now because we can’t find them anywhere on Earth.
  2. 5. My Grandma’s very ______ and does all her own shopping and cooking.
  3. 7. Air pollution is a big ______ to our health.
Down
  1. 1. Vietnam has a ______ of about 102 million people.
  2. 2. There are thousands of ______ on Earth. Lions, kangaroos, and elephants are just a few examples.
  3. 3. We should stop throwing litter into rivers to ______ water pollution.
  4. 6. ______ animals can become extinct if not protected.