Early farmers who were in contact with animal-borne diseases
<span>nomads roaming the land looking for food </span>
<span>hunter-gatherers searching for berries </span>
<span>archaeologists who discovered animal remains</span>
Answer:
A writer should use a formal tone in an argumentative essay to appear knowledgeable and trustworthy. This way readers know what they are reading are a good source. Hope this helps!
<span>flood control
military</span>