Record January heat suggests La Niña may be losing its ability to keep global warming in check
La Niña is a part of the El Niño southern oscillation, a climate fluctuation that slowly sloshes vast bodies of water and ...
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Chemical reactions and reversible changes
A change is called irreversible if it cannot be changed back again. Many chemical reactions are irreversible. In a chemical reaction, new materials are always formed. Sometimes these new materials ...