Answer:
Contractions
Explanation: This is because they are, for example, we're and aren't and those are not typically used in formal writing.
Secondary Sources are useful because they offer a different point of view to past events. While most secondary sources are based on a primary source, they are still useful because of the analysis that they can offer compared to past stories.
Answer:
D.
Explanation:
unusual winds cause warm surface water from the equator to move east
Answer:
To keep Mayan gods happy
Explanation:
The reason Mayans sacrificed humans was because they thought it would make their gods happy.