7) What percentage of ppm of dissolved oxygen indicates good water quality? a) 6.7
b) 8
c) 4.5
d) Below 4.5

Ascientist is conducting an investigation that involves water, silver, carbon dioxide, and oxygen gas which group of statements best describes all of the materials he is using in the investigation?

Which short-term environmental change is most likely to lead to ground shifting, landslides, and the collapse of buildings or roads? forest fires flooding earthquakes

Cells must be in osmotic equilibrium with their surroundings environments because if they swell or shrink thier membranes will rupture