What is the best description of an organism that is fit for natural selection?
the organism is physically stronger than competing organisms.
the organism is physically stronger than organisms of a different species.
the organism is better able to survive and pass on traits to offspring than competing organisms.
the organism is a member of a population in which every member survives without competing.

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.