Which factor of the tundra ecosystem is biotic? wind dead bird carbon dioxide temperature

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol

What is turgor pressure, what causes it, and what does it do for a plant?

What is true of all organisms in the kingdoms protista, plantae, fungi, and animalia? a. they are multi-celled. b. they are photosynthetic. c. they have cells that contain membrane-bound organelles. d. they contain cells that lack membrane-bound organelles.