Sedimentary rock, the layers/beds tell it all
<span>Wastewater treatment plants have been existing for already 120 years of time. Ever since the period of 1800's, the existence of wastewater treatment plants is present. Dating from today up to 1800's, it's been 120 years already. So the answer to the following question is 120 years.</span>
The correct answer is: [B]: "Nile" .
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Note: The Nile River is in Africa. All of the others are in South Asia.
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The Second Agricultural Revolution is most notably <em>accompanied </em>by the historical development known as:
The Second Agricultural Revolution was one of the most important agricultural revolutions in the history of mankind as it began in the late 1600s up until the end of the 1800s.
This revolution brought about new ideas in agriculture such as selective breeding, crop rotations, use of fertilizer, etc and this was followed up by the Green Revolution which began in the mid 1900s
Therefore, the correct answer is option A
Read more about Second Agricultural Revolution here:
brainly.com/question/2111426
Copper silver and gold that found in barazil