Question

Short answer type questions.
What are trace elements? How they differ from tracer elements?

Answer 1

Chromium, Cobalt, Copper, Iron, Manganese, Magnesium, Molybdenum, Selenium, Zinc, and other elements that occur in very small amounts (usually less than 1 to 10 parts per million) as constituents of living organisms, and are necessary for their growth, development, and health are called trace elements. while tracer is a chemical, usually heavy isotopes of elements are used to track the progress or history of a natural process