Lol pls help i cant figure it out

Historians have recently discovered a historical journal published in the early twentieth century. the journal contains facts based on original sources about the downfall of the early byzantium empire. historians consider this long-lost journal to be a breakthrough in their understanding of the byzantium empire. based on this information, the journal is a source.

Afeature that an organism __ and reproduce in its environment is called a

In this diary only in researching sidney montz or can it be used to research broader subjects