Diatomic molecules of gases at room temperature are due to bonds. ionic covalent metallic none of the above

Which of the following mining methods disrupts the sea floor?

Can someone me with these questions plz.

He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98