Third degree burn
Every one of those arguments has holes the size of mountains.

Examples:

Helium is not emitted by every form of radio active decay !! Alpha beta or gamma particles are emitted by radio active decay. Not the same at all. I work with isotopes and have set up hot labs !!

Not enough mud on the sea floor. What about tectonic shift and the formation of sand stone, changing water tables etc etc !

Not enough sodium in the sea. Look up the Carbon cycle, the sodium cycle and the way all the other mineral elements circulate through the biosphere. Again this is just not true.

Earths magnetic field is shifting polarity not decaying at the rate they are quoting. There is no problem with its stability vis a vie the age of the earth.

And as for the skeletons argument... Do you really believe that or do you think it is the last resort of a desperate mind !! Why do you think we are not overwhelmed by human remains, imagine how many millions of people die every year !! Or the remains or ants, millions of them die every day word wide !!

One final note, if you are going to quote directly from web sites it is a good idea to credit them or you are committing plagiarism.