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.

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.