Which sink is an appropriate place for food workers to wash their hands?

Which is an effective way to prevent bullying and harassment

Can someone give me a hand with this one.

What is the main difference between trace elements and the main elements that make up the body? 1) main elements consist of heavier atoms. 2) trace elements are only needed in small amounts. 3) trace elements consist of heavier atoms. 4) main elements are only needed in small amounts.