List at least two natural causes of global climate change?

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen

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.

With the word calcite wich completes the analogy mineral, erosion, marble, or aragonite