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

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

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

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

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

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

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

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) improved memory
C) clean thinking