surface water
aquifer
runoff
evaporation
transpiration
Evaporation of water from the leaves of a plant
sublimation
precipitation
Any form of water that falls from clouds and reaches Earth's surface
condensation
infiltration
air pollution
smog
carbon monoxide
global warming
composting
occupational disease
noise
toxic heavy metals
job stress
personal protective equipment
injury
accident
EPA
nitrogen and oxygen
acid rain
second hand smoke
carbon dioxide
natural sources of air pollution
recycling
methane