Answer:
A secondary source is a source from a second hand perspective that DID NOT experience the event first handed but is writing about the event without the origional experience of the event. An example of this would be the topic of World War 1, a secondary source would be a news article or a book talking about the war without actually experiencing it. But a primary source would be a autobiography of a person experiencing World War 1. Another great example is that a secondary soource is a biography of someone while a primary source is a autobiography of a person.
Explanation:
Habitat loss is one of many causes of species extinction
