Answer:
Hydrogen ions
Explanation: pH is the concentration of hydrogen ions (H+) in a given solution. A pH of 1 means there are a lot of hydrogen ions and a pH of 14 means there is a very small concentration if them.
Given what we know, we can confirm that the person credited with the development of interchangeable parts is Eli Whitney.
<h3>Why was this development so important?</h3>
This development greatly improved production efficiency, as know almost anyone could produce complex goods by just building specific parts.
This also greatly reduced the cost of goods and their maintenance.
Now, instead of having to replace a product when something broke, it was possible to just purchase a replacement part to fix the problem.
Therefore, given the importance of the development of interchangeable parts in terms of production and costs, it has been very well documented in history and its invention is credited to Eli Whitney.
To learn more about Eli Whitney visit:
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Answer:
The cell's plasma membrane acts as a protective layer, with receptors that allow for cell communication, and allows certain molecules or proteins that can enter said cell.
Explanation:
The phrenic nerve, which controls the diaphragm
