The summary of the main idea is the conclusion
It is important to have a primary source and a secondary source because it allows you to set up the writing and add information to support or disagree with the topic. If you were reading two books and you were planning on comparing/contrasting them using a specific topic, those two books would be your primary sources. The primary sources are the bulk of the writing while the secondary sources add on in support with your argument. Secondary sources would be source outside of your primary sources (Internet, magazines, newspapers, etc). Primary source is the main source. Secondary source is the source outside of your main source. Secondary sources are usually used to give your paper more factual evidence or things of that source.
Because almost as soon as he created him he ditched him.
Answer:
I think it means calculations involved in determining how much fuel the EDS needs to safely make it down to the planet with its cargo.
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