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

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

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

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) 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 shouting louder.
C) by covering your ears or using earplugs

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

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