A) recycling
B) harmful substance in the environment
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 have shiny teeth.
C) to look good

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

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

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

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

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

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

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