Lava<span> is molten rock. It is </span>created<span> deep beneath Earth's surface (often 100 miles or more underground), where temperatures get hot enough to melt rock. Scientists call this molten rock magma when it's underground.</span>Lava<span> is molten rock.
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usually, ionic bond occurs between metal and non metal
here Na is metal and Cl is non metal
so bond in NaCl is ionic bond
Unicellular eukaryotes<span> are </span>single-celled<span> organisms, all of which were traditionally classified in the kingdom Protista. The term "</span>unicellular" denotes that these organisms have only one cell, while the term "eukaryote<span>" means that each of these cells has a nucleus -- and other organelles -- held in place by membranes.</span>
