Out of 92 naturally occurring chemical elements how many are considered as bio-elements? February 1, 2021 / By Preparation Point / Biology Mcqs Share on WhatsApp Share on Facebook Share on Twitter Share on LinkedInA. 6 B. 16 C. 26 D. 15 Share this:TwitterFacebookMoreTelegramWhatsAppLike this:Like Loading... Related Share on WhatsApp Share on Facebook Share on Twitter Share on LinkedIn