is zebra mussel affecting the lives of humans? if so how.

yes it does

Explanation:

The presence of zebra mussels caused a decline in both commercial and recreational fishing in the affected lakes and rivers. Zebra mussels eat algae, which deprives young fish and fish larvae from the food they need to survive. People ingest these pollutants when they eat the fish that eat the mussels.

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.