Modals
People ______ recycle more to reduce waste.
should
Roads and public areas that are covered in litter and waste
Dirty Streets
We should ______ water by taking shorter showers.
save
We ______ protect endangered species from extinction
must
The contamination of air, water, or land by harmful substances
Pollution
We need to ______ our use of plastic to protect marine life.
reduce
The government ______ implement stricter environmental regulations
has to
The long-term increase in Earth's average temperature
Global warming
People should ______ in campaigns to clean their local environment
participate
Everyone ______ do their part to conserve water
should
This protective shield in the Earth's atmosphere absorbs harmful ultraviolet radiation.
Ozone Layer
Many countries are working to ______ renewable energy sources
develop
Factories ______ reduce their carbon emissions to combat climate change.
must
These gases, such as carbon dioxide and methane, trap heat in the atmosphere.
Greenhouse gases
It's important to ______ forests to maintain biodiversity
preserve