reduce co2 emissions
air temperature
calling attention
carbon dioxide
co2
co2 emissions
comical
depletion of the ozone layer
earth
eco
ecology
environment
environmental issues
fever
global warming
globe
greenhouse gas
heat
heat storage
hot
iceberg
illustration
liquid
melt
natural
note
ozone hole
ozone layer
prevention of global warming
problem of global warming
reduction of carbon dioxide
south pole
thermometer
warning
white back
world
world map