Hi, I need help with #14 and I'm preparing for the living environment regents . Pls give your answer and explanation. picture shown below :

15 ! come and answer! a(n) disease is caused by a pathogen and can spread among organisms. a infectious b noninfectious c toxic d contaminated

In many humans, exposing the skin to sunlight over prolonged periods of time results in the production of more pigment by the skin cells (tanning). this change in skin color provides evidence that -

If the nucleus of a cell was removed the cell wouldn’t be able to make proteins because