Sentences with phrase «various trace elements»
Researchers analyzed the levels of various trace elements in hundreds of samples of carbon - rich shales that had been deposited in oxygen - poor regions of the ocean surrounding ancient continents during the past 3.5 billion years.
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Key methylation elements include methylated B vitamins (riboflavin, B6, folate and B12 in particular), magnesium, selenium, zinc and various trace minerals.
Hinshelwood also studied how various nutrients, trace elements, and toxic substances influence the chemical reactions that occur during bacterial growth, publishing more than 100 papers on this subject as well.
We can use galactic environmental conditions and the star formation history to trace what happened very early on in that galaxy that provided the various elements we see today.
Since Bentonite Clay is harvested from the earth and is a natural substance, it contains trace amounts of various elements, including trace amounts of lead.