Which motion of particles across a membrane requires energy? . a) from high concentration to low concentration. b) from low concentration to high concentration. c) with no concentration gradient. d) through dynamic equilibrium

What contributes to the high level of biodiversity found in wetlands? a. the large amount of available organic matter to organisms that are food for larger organisms b. the amount of available water for organism use c. the high nutrient availability d. all of the above select the best answer from the choices provided a b c d