Most of the animals in existence today had their origins during the: A. Mesozoic Era
B. Cambrian Period
C. Cretaceous Period
D. Devonian Period

Dna is always read in the whereas rna is read in .

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