A cell needs to take up Na+ ions. The concentration of Na+ outside the cell is 200 ppm, and inside the cell it is 350 ppm. Which type of transport will the cell use? A. Active tTransport B. Diffusion C. Passive Transport D. Particle Transport

Acladogram is a branching diagram that represents suggested evolutionary relationships among organisms based on the presence of unique traits. a scientist discovers a new organism that lacks limbs and does not have a true backbone. the organism lays eggs to produce offspring and has a cartilage-like rod known as a notochord running along its dorsal surface. on the cladogram below, select the species to which the newly discovered organism is most closely related.

Which of the following is a way that minerals are used? a. industry construction technology d. all of the above

What is one energy transformation that is taking place in the photo? radiant energy to thermal energy thermal energy to nuclear energy chemical energy to thermal energy radiant energy to chemical energy