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

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

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

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

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

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

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

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