*science* how do dying stars contribute to the formation of new stars? a. the light elements they expel form new nebulae. b. their core is absorbed by neighboring nebulae. c. their radiation facilitates nuclear fusion in young stars. d. they transform into a gravitational field that attracts hydrogen.

C.  

Their radiation facilitates nuclear fusion in young stars.

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.

the increase of protons   hope this