Xylem
transport water and minerals upward
transport food downward
is only found in the roots of a plant
is a plant's outer layer of cells

How are gross production and net production different? a. net production is always greater than gross production. b. net production is always less than gross production. only animals have net production. d. only plants have net production. select the best answer from the choices provided

What are positive impacts of algae? how is it used?

Energy stored in the bonds that hold together the atoms and molecules of all substances is called a. kinetic energy. b. electrical energy. c. mechanical energy. d. chemical energy.