I think the answer to that question is d and a
They traded with them selves.
Their civilization has never paused, or changed. They still have their old cultures (sort of) They still have the same language.
Answer:
Psychologists use the scientific method to conduct their research. The scientific method is a standardized way of making observations, gathering data, forming theories, testing predictions, and interpreting results. Researchers make observations in order to describe and measure behavior.
Answer:
Explanation:
The testimony by the bank employee that the photo accurately portrays the scene of the crime is only required because the photo is only being used as “demonstrative evidence,” and demonstrative evidence only needs to be authenticated to be admissible. Evidence is “authenticated” if there is testimony asserting that the evidence is what the proponent claims it to be.
Number 1 is not necessary because the photo is not being used as original evidence that played an actual role in the robbery itself; for example, a gun used by the robber, which would require a “chain of custody” type of authentication to be admissible.
