The answer is "Experimental research".
Experimental research refers to any research led with a scientific approach, where an arrangement of variables are kept steady while the other arrangement of factors are being estimated as the subject of test.
The most straightforward case of an experimental research is leading a laboratory test. For whatever length of time that examination is being directed under logically satisfactory conditions – it qualifies as a trial explore. A genuine experimental research is thought to be fruitful just when the scientist affirms that an adjustment in the dependent variable is exclusively because of the control of the independent variable.
You need all the information from the S.S passage and use textual evidence
Answer:
surviving of what they need
Answer:
Answer: Historians have identified the basic characteristics of civilizations. Six of the most important characteristics are: cities, government, religion, social structure, writing and art.
