1) Some have started using up-to-date filters to prevent pollution. FACTORY
2) Many factories and plants pollute air by pouring emissions into the air.
HARM
3) We must not ignore the problems of pollution.
ENVIRONMENT
4) Paper and plastic are recycled at factories.
RECYCLE
5) People use different kind of to make paper.
CHEMISTRY

ALEXSEENKOALEX    1   25.11.2020 21:49    8