Amembrane that allows only some materials to pass through shows selective permeability.

Diffusion and osmosis are forms of passive transport

Which statement correctly describes other ways in which nebulae and stars are different? a. a star always has a higher density than a nebula. b. stars can form inside a nebula but a nebula can never be produced by any star. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star. reset submit

The importance of the mind as a part of the body is an example of: