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

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

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

A) ride a bicycle
B) drive more cars
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) both a and b.
C) after petting a dog

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

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

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

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