Across
- 2. Biological system made up of a community of living beings and the natural environment in which they live
- 4. Suspension of tiny particles of solids or liquids in the air or other gas
- 6. It is a layer that protects life on Earth, absorbing part of the ultraviolet solar radiation in the ozone layer.
- 7. is a persistent degradation of dryland ecosystems caused by climatic variations and human activity
- 9. Lack of rain for a prolonged period of time leading to dry fields and water shortages
- 11. is a physical process that consists of the slow and gradual passage from a liquid state to a gaseous state
- 12. is the outlet of liquid waste that pollutes
- 13. are all gaseous fluids that are emitted as waste
- 15. are the occupation by the water of areas that are usually free of this
Down
- 1. Extinction of the plants of a field
- 3. Layer made up of water, earth and a thin mass of air, in which living beings develop
- 5. Process of the evolution of a climate towards aridity
- 8. is the propagation of energy in the form of electromagnetic waves or subatomic particles through a vacuum or a material medium
- 10. It is a substance whose molecule is composed of three oxygen atoms, formed when the two atoms that makeup oxygen gas dissociate
- 14. is the sustenance of marine life.