You Are a Researcher Excavating a Site in a Cave

question 9

Multiple Choice

You are a researcher excavating a site in a cave in Israel.There are many layers of sediment and primitive artifacts (flint tools for cutting and scraping) from ancestral Homo species within the cave.As you work your way deeper and deeper through the layers,you notice that artifacts in the deeper layers (laid before 350,000 years ago) do not show any signs of having been exposed to fire.Artifacts in layers less than 350 tya show rapidly increasing evidence of exposure to fire.Your colleagues working in nearby caves and caves scattered around the eastern Mediterranean Sea have found similar evidence dating in the same time frames.The evidence is also consistent with that of European sites.What does this suggest about the use of fire by ancestral humans?

• A)Ancestral humans who had migrated to areas around the eastern Mediterranean Sea and Europe very likely learned to control and use fire around the same time (about 300,000 to 350,000 years ago),and they became increasingly good at it.
• B)Ancestral humans (about 200,000 years ago)were simply using fire they obtained from lightning-sparked wildfires;they did not make or maintain their own fires.
• C)Ancestral humans could not have migrated into climates cooler than those found in Africa until about 150,000 years ago because they had not yet figured out how to use fire before that time.
• D)The hominins occupying the caves,making and using fire must have been modern Homo sapiens because no other human ancestors were still surviving 300-350 tya and no other human ancestors were ever able to use fire.

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Definitions:

Suppliers Expect

Anticipations or predictions made by suppliers about future market conditions that can affect production decisions.

Equilibrium Price

The price at which the quantity of a good or service demanded by consumers equals the quantity supplied by producers, leading to market stability.

Equilibrium Quantity

The amount of products or services that are offered and sought after at the balanced market price.

Competitive Market

A market structure characterized by a large number of buyers and sellers, where no single entity has the power to significantly influence market prices.