A. a heuristic they apply the appropriate knowledge before even choosing the answer from what they know before
Answer:
As the pH rises, the concentration (toxicity) of the ammonia also increases. When the pH level increases above 9, most of the ammonium in the water is converted into toxic ammonia (NH3), which can kill fish. ... The Nitrobacter bacterium feeds on the nitrites in the water and converts them into nitrate (NO3).
Explanation:
test the ph balance.
Answer:
post - industrial
To me I think that's the best
Answer:
During Song times, heavy industry — especially the iron industry — grew astoundingly. ... Iron and steel were put to many uses, ranging from nails and tools to the chains for suspension bridges and Buddhist statues.