The era of "ancient life" is known as the
o paleozoic
o precambrian
o mesozoic
o cenozoic

Differences between compact bone and cartilage

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 type of competition exsist between two species. turtles and fish