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

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

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

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

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

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

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

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