With what frequency would you have to push a child on a swing that had supporting chains that were 2.3 m long

Global warming was a major concern some people do not care global warming is fake it is not real the percentage of it happening  is slight 

Molybdeum(mo)orruthenium (ru)actually, elements with similar chemical properties as technetium would bemn, re, and bh. this is because elements in the same group/family (column) have similar chemical properties. elements in the same period (row) have the same number of energy levels (or shells).

Answerclock speed;