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

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

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

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

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

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

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

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

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

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