Deadly particles like SO2 that comes into contact with the air will form air pollution. This deadly particles will then form acid rain. When those rain comes into contact with water supply, they turn the water acidic. They will cause river to be too acidic for fishes and other living organisms to survive.
Jenny is most likely seeing sleet dued to the fact it must be 32 degrees Fahrenheit to freeze and turn into a solid snow/ ice.
I would say gills and webbed limbs. If they are amphibious, then I would say webbed feet and webbed arms.
B! Cardiac muscle hope it helps sorry if it doesn’t!
