I’d say C.
A doesn’t make sense, they definitely could’ve domesticated animals in that time.
B doesn’t make sense either, they could’ve easily seen smoke signals, the sky wasn’t filled with them often.
C is just a weird answer. I doubt they were “passive observers” but probably the best answer to the question.
D doesn’t add up because they definitely needed agriculture/food surpluses. They were always hunting, they obviously ran out of food rather quickly.
So C is the answer.
The correct answer is: [B]: "sludge" .
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One main effect of the global catastrophes was the rising temperature, also known as global climate of the earth surface.
<h3>What is a green house effect?</h3>
This is a natural process that happens when the gases in Earth's atmosphere trap the Sun's heat.
Therefore, the main effect of the global catastrophes was the rising temperature, also known as global climate of the earth surface.
Read more about green house effect
<em>brainly.com/question/2241458</em>
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Answer:
c.100
Explanation:
The distance between scale markings on the horizontal scale is 100 km. Comparison of the vertical and horizontal scales indicates that the horizontal scale distance between tic marks is __<u>100</u>_ times that of the vertical scale.