MCQ
Stromatolites are the colonies of cyanobacteria bind with …………… .
  • calcium carbonate
  • B
    calcium hydroxide
  • C
    magnesium sulphate
  • D
    calcium silicate

Answer

Correct option: A.
calcium carbonate
calcium carbonate

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free