A) clean air and water
B) harmful substance in the environment
C) recycling

A) a gentle breeze.
B) loud music and traffic
C) birds singing

A) to have shiny teeth.
B) to remove plague and prevent cavities
C) to look good

A) burn trash
B) drive more cars
C) ride a bicycle

A) it makes them happy.
B) it can cause stress and hearing loss
C) it help them sleep

A) after using the bathroom
B) both a and b.
C) after petting a dog

A) watering plants.
B) throwing garbage into rivers
C) drinking water

A) by listening to loud music
B) by covering your ears or using earplugs
C) by shouting louder.

A) washing hands before mea
B) not bathing regularly.
C) sharing a tooth brush

A) improved memory
B) clean thinking
C) difficulty concentrating