Across
- 1. The apex predator at the top of the food chain.
- 4. Substances that pollute the environment.
- 6. A large mammal living in forests, often seen climbing trees.
- 8. Effect The increase in temperature due to the accumulation of gases in the atmosphere.
- 9. Reserve An area created by humans to protect nature.
Down
- 2. Natural habitat where animals live.
- 3. The largest mammal in the ocean.
- 5. The gas produced by plants during photosynthesis.
- 6. A flying animal, commonly found in birds.
- 7. Aquatic creatures, many of them are called fish.