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

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

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

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

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

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

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