Contaminant is any substance that causes?

True or false: determining the source and motive of an ad for a health product will you decide whether the ad is a reliable source of health information.

Answer in a couple of paragraphs, 1 or 2 at the most if anything! 20 points + brainliest--> explain what all the systems in your body do to work together < --list of systems needed: circulatory systemrespiratory systemdigestive systemexcretory systemnervous system

Hey! my question is: how many calories does it take to burn off and loose 1 if would be gladly appreciated if some one me in this! : )