Remembering that cells in the epidermis get all their nutrients via diffusion from the blood vessels in the dermis, why would it be uselful for the connection between the two layers to have more surface area? (written response)

Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star

Apump contains 0.5 l of air at 203 kpa.you draw back on the piston of the pump, expanding the volume until the pressure reads 50.8 kpa. what is the new volume of the air pump

Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together