Where do i put a comma in the number 6484649

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

Which of these sequences lists the correct order for the creation of sedimentary rock from sediment? a. deposition, burial, compaction, cementation b. burial, deposition, compaction, cementation c. compaction, deposition, burial, cementation d. cementation, deposition, burial, compaction

What does the process of natural selection involve