Shelly is reciting the names of the first five presidents of the united states. the type of memory she is using is:

Semantic memory

Explanation:

Semantic memory is the part of our memory. Semantic memories are all about the facts that we all gather in our life when we all were young. these are the memories that are not related to our emotional or personal experience.  

There are some semantic memories such as:

Thus here in the above context, Shelly has been used semantic memory in which she gets information about facts such as the president of the United States.  

answer: hey improve the marine life in a certain area.

they provide a new location for fishermen to fish and which works to ease the pressure on natural reefs.

they are a great way to get rid of large objects that would otherwise be placed on landfills

explanation:

the historians cited in the article all agree with one another about the cause of the civil war. despite coming from different backgrounds and cultures, the historians agree that slavery was the root cause of the civil war. the fact that all these historiansgenerally agree with one another makes their shared viewpoints more reliable and valid, especially because the historians have different backgrounds and all work for the well-respected institutions of howard university, clemson university, and the university of colorado.