The main two characteristics that describe any igneous rock are and
a. texture; gas content
b. composition; texture
c. cooling rate; composition
d. composition; gas content

Which medullary index indicates a human hair? a. 0.653 b. 0.733 c. 0.516 d. 0.256

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.

Give three examples of plant activities that are affected by circadian rhythms and natural fluctuations in the length of daylight?