Across
- 2. The planet to which we live on.
- 3. the introduction of harmful materials into the environment.
- 4. An area of knowledge that includes such topics as numbers, formulas and related structures.
- 7. a community of people formed on the basis of a combination of shared features such as language, history, ethnicity, culture and/or society.
- 8. all the inhabitants of a particular place.
- 10. The process of converting waste materials into new materials and objects.
- 11. Grow or cause to grow and become more mature, advanced, or elaborate.
Down
- 1. a barren area of landscape where little precipitation occurs and, consequently, living conditions are hostile for plant and animal life.
- 2. The surroundings or conditions in which a person, animal, or plant lives or operates.
- 5. a piece of land surrounded by water.
- 6. an area of land dominated by trees.
- 9. the body of salt water that covers approximately 70.8% of the surface of Earth and contains 97% of Earth's water.