Damage caused to the environment by harmful substances or waste
Toxic
Trash
Poisonous
Pollution
A brown or gray cloud of air over a city caused by air pollution
Rain
Fossil fuel
Dust
Smog
Poisonous or harmful when taken into the body
Toxic
Resource
Bitter
Groundwater
Substances such as gas, coal, and oil that were formed underground from plant and animal remains
Ground fuels
Sewage
Pollution
Fossil fuels
To make something bad or harmful
Poisonous
Decibel
Landfill
Contaminate
Dirty wastewater, especially from bathrooms
Smog
Toxic
Sewage
Resource
Water that collects or flows beneath the earth's surface
Groundwater
Water cycle
Underwater
Pond water
Something very useful or valuable
Reserve
Recycle
Refund
Resource
Causing or capable of causing death or illness; toxic
Damage
Poisonous
Populous
Landfill
To harm or break something
Damage
Resource
Sewage
Degree
A place where trash is buried and covered with soil
Landmine
Landfill
Groundwater
Invisible
To change used things into new materials that can be used again
Resource
Recycle
Reclaim
Transfer
Unable to be seen; not visible to the eye
Invisible
Resource
Volume
Sightless
The level of sound produced; how loud something is
Vole
Quiet
Volume
Noisy
A unit for measuring the loudness of sound
December
Declare
Volume
Decibel
Lasting forever or for a very long time
Resource
Precious
Invisible
Permanent
