Answer:
When CO2 is breathed into the lungs, it dissolves in the water there, diffuses across the alveolar-capillary membrane, and enters the bloodstream. As it combines with water, it forms carbonic acid, making the blood acidic. So CO2 in the bloodstream lowers the blood pH.
The toxins are the substances which decreases the conc. of oxygen in wzater and increase toxicity
Evidence
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Explanation:
Igneous rock is formed through the cooling and solidification of magma or lava.