Which information should be verified to ensure that a source of information about healthcare products and services is authentic and reliable? The source is current.
The source promises a miracle.
The source is supported by opinions.
The source has a catchy phrase.

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.