Across
- 2. Which ancient civilization built the pyramids of Giza?
- 4. Which country is home to the Great Barrier Reef?
- 5. In which layer of Earth's atmosphere does weather occur?
- 7. What is the largest internal organ in the human body?
- 8. In math, what is the term for a number that has no fractions or decimals?
- 9. What is the main gas found in Earth's atmosphere?
Down
- 1. Which type of rock is formed from cooled lava or magma?
- 3. What is the process by which a caterpillar transforms into a butterfly called?
- 4. What is the chemical symbol for gold?
- 6. Who wrote the play "Romeo and Juliet"?