Across
- 3. What part of the cell controls all activities?
- 8. What is the main component of natural gas?
- 9. What is the main gas responsible for global warming?
- 10. What do we call a change in position of an object?
Down
- 1. What part of the Earth’s atmosphere contains the ozone layer?
- 2. What is the process of removing waste from the body called?
- 4. Which gas is most abundant in the Earth’s atmosphere?
- 5. What part of the plant transports food?
- 6. What are organisms that live on or inside another organism called?
- 7. Which organ in the human body filters blood?