Desdescribe the relationship between credibility and corroboration

One leads to theoretical framework and the other leads to experimental verification

Explanation:

When we speak about credibility it means how valid is one's point of view or any given statement. This validity can be reached by searching for theories and expert's points of view that lead to the same point where you want to adress an idea.

Corroboration is what actually leads to a higher level of credibility, when you can support your ideas with other authors and experts this enriches any theoretical framework, but when you can actually corroborate in a different scenario what you are stating based on a strong and deep analyzed bibliography, you can then intend to elaborate a theory, which can be ultimately conceptualized as the creation of new knowledge.

sumerians were responsible.

the answer is actually b.   as habitats are destroyed, animals and plants may become extinct.   , according to edge nuity