Which organisms are most closely related?
a. buteo lineatus and buteo platypterus
b. cyanocitta stelleri and polysticta stelleri
c. carpodacus mexicanus and lcterus galbula
d. elanus leucurus and pandion haliaetus

Facilitated diffusion move large molecules and/or polar molecules across the cell membrane. what does facilitated diffusion use to do this?

Which spheres are involved when sedimentary rocks formed from parts of seashells at the bottom of the ocean? a.) biosphere, atmosphere, geosphereb.) geosphere, hydrosphere, biosphere c.) geosphere, exosphere, hydrosphered.) hydrosphere, biosphere, atmosphere

Use the numbers to place the companies in order of greatest comparative advantage to least comparative advantage in producing large tubes of toothpaste.