Which size cells are more efficient at obtaining nutrients?

Which of the following is not a way in which a vascular plant's xylem and phloem are similar?

Why is earth's outer core hotter than earth’s oceanic crust? earth’s oceanic crust is denser than earth’s outer core is. earth’s oceanic crust has lava flowing from the mantle. earth’s outer core has a composition of solid iron and nickel. earth’s outer core is deeper within earth than oceanic crust is.

Coral have a symbiotic relationship with what in order to eat?