Across
- 2. Simple aquatic organisms that can perform photosynthesis, often found in water bodies
- 6. process that forms clouds
- 7. A state of matter for your element
Down
- 1. The introduction of harmful substances or contaminants into the environment
- 3. Element in a water molecule
- 4. Associated with sadness or calmness
- 5. A device that uses energy to perform a specific task or function