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)
 
        
             
        
        
        
Answer:
They would be damaging the environment by cutting down the trees. Trees play a vital role in the environment as they clean the air of carbon dioxide and help stop erosion as well as provide food and habitats to various organisms. Were they to be cut down, they would stop being these things to the environment. 
As for the people, the solider betrayed their trust because as soldiers, they are meant to protect the people of the country that they are from. If a country's soldiers begins to attack the livelihood and property of the country's citizens as well as killing its own people, they have violated the oath they took to protect those same people.
 
        
             
        
        
        
Dont do something you will regret later is the theme 
        
             
        
        
        
b future perfect progressive