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Crucigrama Sopa de Letras Hoja de Trabajo
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Impact on the Atmosphere

Horizontales
caused when nitrogen and carbon compounds in the air react in sunlight
The mix of solid and liquid particles in the air
Protective layer in the Earths atmosphere from the UV light of the sun
Verticales
Rain or snow with a lower pH than normal rainwater
The contamination of air by harmful substances including gases and smoke
Substances destroying the ozone layer