The answer is D) Tertiary because encyclopedias use both primary and secondary sources.
Answer:
Security – ...
Control over system performance – ...
Job accounting – ...
Error detecting aids – ...
Memory Management – ...
It is done to provide for better engine performance. It is important for two main reasons. One is that if one ignition system fails the other can for a time take care of it and hold its ground until you land or fix it. Another is that it is used for more efficient consumption of fuel and air which makes the engine work better.
Explanation/Answer:
Data can be put into more than one cell (Excel), which should be an important key to your answer. In SEVERAL CELLS AT THE SAME TIME or more. The data can be entered in dates, text, times, or numbers. Formatting the data can be done in a possibility of ways.
