How is the structure of cells in a root's transport system different
from the structure of cells making of the epidermis?

the bullets go in this order.

4, 1, 3, 5, 2

which

the earth is thought to have been formed about 4.6 billion years ago by collisions from a cloud of hydrogen, helium, rock, ice and other materials. these were pulled together by gravity to form objects in and around earth like- asteroids and small early planets called planetesimals.

so, the best possible answer to this question will be option d- to harden materials to form different parts of earth’s layers