Answer:
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Explanation:
Soda ash/sodium hydroxide injection
This treatment method is used if water is acidic (low pH). Soda ash (sodium carbonate) and sodium hydroxide raise the pH of water to near neutral when injected into a water system. Unlike neutralizing filters, they do not cause hardness problems in treated water.
Adult frogs are on land and they have feet and a body
Tadpoles are in water and they are somewhat like a fish!
In plants the reproductive structure that produces pollen and seeds is the xylem is the answer