What part of a root’s cells helps it increase absorption?

Is this a single replacement reaction or there is no

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d

Which of the following is a pure substance? airbloodcopperwood