can be generally defined as a change in position /

please help me ,thankyou so much guys !

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)

Which of the following best supports the concept that genetic information is passed on to offspring from both of their parents, not just one?

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled