Across
- 2. which source is stationary source that generates air pollutants from open areas exposed to wind process
- 4. the rigid solid, outer part of the earth
- 7. what is large region such as tropical rainforest, tundra, deserts characterized by species adapted to it
- 10. it refers to the long term or permanent loss of tree cover
- 11. is an underground zone or body of the earth material from which groundwater can be obtained at useful rate
Down
- 1. what is a close, long-lasting relationship between two different species
- 3. includes the surroundings, conditions or influences that affect an organism
- 5. the layer of atmosphere most distant from the earth which begins approximately 80 km in altitude
- 6. the organisms that feed on the decomposing particles of organic matter
- 8. the scientific study of interrelationship and interactions between different living and non-living organisms
- 9. producers who prepare their own food from raw material and energy