Which of the following supplies a rich network of blood vessels that provides nutrients and oxygen to the superficial tissues of the brain and spinal cord?

Efficiency is the percent of work put into a machine by the user (input work) that becomes work done by the machine (output work)

Which of the following is a difference between active transport and facilitated diffusion? view available hint(s)which of the following is a difference between active transport and facilitated diffusion? facilitated diffusion can move solutes against a concentration gradient, and active transport cannot.active transport involves transport proteins, and facilitated diffusion does not.facilitated diffusion involves transport proteins, and active transport does not.active transport requires the expenditure of cellular energy, and facilitated diffusion does not.

What would happen if the krill were removed from the food web