The answer is C: Black Sea and Caspian Sea
The answer to this question is:
A. Barley and wheat were both civilizations' main crops
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An agronomist, or crop scientist, studies plants and how they can be grown, modified, and used to benefit society. They use science to carry out experiments that create new techniques for agriculture production.
The answer is the first option.
The correct answer is C) Logging. Hope this helps.
They give more/additional information about a certain topic of research.
They help learns to know what they may expect to see on the field
