Across
- 2. A biological community where living organisms interact.
- 4. The layer surrounding the earth protecting our skin from the ultraviolet rays
- 5. An area of land that is covered by trees.
- 6. The use of natural resources at a steady rate that does not compromise the needs of future generations.
Down
- 1. Protection of animals and efficient use of resources.
- 3. Combustible black rock consisting of plant matter.
- 4. A colourless, odourless gas, and the life-supporting component of the air.
- 5. All the animals that live in a particular area, time period, or environment.