What is this?
noise pollution
air pollution
what is this?
biodegradable
non-biodegradable
What is this?
invention
environment
What is this?
environmentalist
inventor
What is this?
global cooling
global warming
What is this?
water pollution
land pollution
What is this?
melting ice caps
rising sea levels
What is this?
microparticles
macroparticles
What is this?
plastic pollution
rising sea levels
What is this?
pollution-rubbish
creation
What is this?
recycle
destroy
What is this?
use more
reduce
What is this?
reuse
edible
What is this?
melting ice caps
rising sea levels
What is this?
air pollution
water pollution
