Which part of a plant works as its "nostrils"?

A. stoma

B. guard cells

C. chloroplasts

D. all of the above

What one of the following items is a producer of pollution? O A) forest OB) oceans OC) factories OD) bicycles

What is the driest biome on earth

How long-lasting were the effects of the oil spill from the Exxon Valdez?

In the Bohr model of an atom, an electron's path is not known exactly.

5. Which bases pair with each other to form the middle steps of the DNA molecule? (What is the base pairing rule?

If the seawater carbonate ion concentration is 270_mol/kg, what is the approximate rate of calcification, and approximately how many days would i take 1 square meter of reef to accumulate 30mmol of calcium carbonate (CaCO3) ?

What is the importance of decomposers in an ecosysyem such as mold?

Which statement about ddt best shows how science has been impacted by society? ddt led to insect resistance. ddt was considered harmful and was replaced by other pesticides. ddt was the first modern insecticide.

What factors affect the diffusion of water through a membrane by osmosis?

What chemical structure makes up the cell membrane? protein bilayer hydrophilic phosphate phospholipid bilayer hydrophobic fatty acid