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

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

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

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

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

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