Need asap ! density refers to a physical property that is measured using a ratio of divided by so that two objects of the same size can still have very different density. a. mass, volume b. height, width c. weight, height d. concentration, mass

A. mass, volume.

Remember this:

A heart split in half: The top resembles an M while the bottom resembles a V

That's mass over volume

Hope this helps! <3

la transducción de señal ocurre cuando una molécula de señalización de fluido extracelular activa un receptor de superficie de la célula.