Answer:
(d) None of the above
Explanation:
The pH of your stomach must be highly acidic, because the optimum pH for pepsin, the chief stomach enzyme, is 1.5.
(a) and (b) are wrong, because both conditions are basic.
(c) is wrong, because pH 7 is neutral.
After the solar cycle takes place, bigger sun spots appear, flares appear, and the solar radiation changes.
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Water falls from a reservoir through a channel to a turbine. The water turns the turbines, which allows the generator to make electricity.
Answer:
Those types include recreational, transport, agricultural, residential, and commercial.
Explanation: