Talk:Biological roles of the elements

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The citation for Arsenic's role in the human nervous system does not provide additional information.

Thorium

"thorium....Has no known biological role,[4] and moreover is extremely rare in the Earth's crust." --> This is extremely wrong. Thorium is more common than, e.g., lead, silver, gold, etc.Eudialytos (talk) 21:28, 15 December 2022 (UTC)[reply]

Ref.:

Parker, R.L., 1967. Data of Geochemistry, 6th ed. Chapter D. Composition of the Earth’s Crust. Geol. Surv. Prof. Pap. 440-D. US Government Printing Office, Washington, 23 pp. Eudialytos (talk) 17:41, 22 June 2023 (UTC)[reply]

Basic science

Brain and their bration 102.89.46.22 (talk) 08:01, 7 July 2024 (UTC)[reply]