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Alja [10]
3 years ago
15

Which organisms convert nitrogen into a form that is usable by humans?

Biology
1 answer:
valina [46]3 years ago
7 0
The possibility to answer is C.
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Answer:

<u>A common element among all the river valley civilizations was irrigation systems that moved water to crops and settlements</u>

Explanation:

  • <u>River Valley civilizations where the civilizations that were found on the banks of the river like the Mesopotamia ,Indus valley civilization.</u>
  • <u>These civilization where agriculture based civilization as they depended on river for drinking water and irrigational activities</u>

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Trends are gradual notable changes or patterns over a series of data points on a line or curve of a graph. These allow for summarizing data and predicting results. A data summary provides a comprehensive report of experimental findings. This makes the analysis of data easier by answering key research objectives outlined in the experimental procedure.  Summaries allow for tracking trends and procedural changes, observations and potential; this makes it easier to arrive at conclusions faster.

Learn more about empirical data at brainly.com/question/1669295

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