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

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

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

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

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

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