Answer:
secondary; basic
Explanation:
Secondary literature refers to a form of literature that is created by analyzing , Evaluating, and Analyzing the literature work that created by other people. (In the example above, the article is analyzing/evaluating the work of other scientist named Tiktaalik roseae)
The research itself is considered as a Basic research because it is aimed to provide more knowledge that help us improve our understanding of a certain phenomena (Rosae's areticle help us understanding the link between fish and terrestrial tetrapods)
Really confusing try summing it up in your own words for the answer!! Hope I helped!!
Answer: Edgar Allan Poe was a dedicated writer who took his craft seriously. Over the length of his career, he wrote 20 short stories and over 50 poems.