write a report using the following headings aim, method, result, conclusion about reaction of iron with oxgen​

Which traits do human embryos have that link them to a common ancestor with fish and reptiles? a. scales and tail b. gill slits and scales c. tail and gill slits d. hair and tail

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp

The chemical formula for emerald is be3al2(sio3)6.an emerald can be decided as