What is the most significant difference between freshwater aquatic ecosystems and marine ecosystems?​

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.

Which of the following typically characterizes a tropical rainforests

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?