Which of the following describes our current solar system model? planets revolve around a star, and moons revolve around planets. planets and moons all revolve directly around a star. planets, stars, and moons wander aimlessly in the universe. planets revolve around a star and moons wander throughout the solar system.

Many kangaroo rats live in the sonoran desert of the southwestern united states. they have a variety of adaptations for living in the desert. under which circumstance would the kangaroo rats of the sonoran desert be most likely to develop new adaptations by natural selection?

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.

In which of the following relationships is one organism always benefited while the other organism is always harmed