Are you looking for the term for a chemical pollutant?
I believe it is Nitrogen dioxide
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Pit bulls: bred for property guards and sadly dog fighting
German Shepard(K-9): good strength, sense of smell, speed, and stamina. Commonly used in the police force.
Answer:
Fracking can contaminate water supplies if it is not done properly, because the fracking fluid injected into rock to enable gas to be released often contains chemicals. If the borehole is not properly cased to stop leaks, the fracking water can escape into the aquifer
Red Blood Cells would take up 41% of the blood's overall volume.
