My mother has to measure blood __________ every month

__________ pollution is harmful or annoying level of noise, as from vehicles, industry activities, etc.

Parents should teach children not to __________ wastes on the road

I can’t hear your voice __________ I’m wearing an earplug

His grandfather made him __________ hard when he was small

This picture __________ the contamination of ground water.

Could you list some non-point source __________?

Scientists has just come up __________ a solution to hearing loss

If we dump a plastic into the ground, it __________ a long time to disappear.

Pollutions are harmful __________ human health

__________ water resulted in the death of many aquatic animals.

What would you do if a factory in your neighborhood __________ untreated water into the river?

Have you ever heard about the __________ of radioactive pollution?

__________ pollution is the increase of temperature caused by human activity.