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

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

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

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

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

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

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

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) difficulty concentrating
B) improved memory
C) clean thinking