Which of the following help break down rock into soil? * O A. Lichen
O B. Weeds
C. Shrubs
O D. Trees

Lichen for sure is the main thing that starts the breakdown of any type of rock into soil. Roots are the second thing to start the breakdown

1) clean up you lab area2) dispose of the chemicals as instructed by your teacher3) put everything back where it belongs unless your teacher tells you otherwise4) dispose of gloves5) wash hands with soap and water