Answer:
1. Kangaroo % Koala.
2. 5 of the colors black, blue, red, green & yellow.
3. The Great Barrier Reef.
4. about 13.8 billion years old.
5. 4.543 billion years.
6. the mesosphere.
7. The national game of the USA is Baseball.
8. Cricket is claimed to have been invented in England. The national sport of England is cricket.
9. A manometer is an instrument used to measure and indicate pressure. There are two types of manometers, analog and digital.
Have a wonderful day! :-)