<u>City requirement</u> refers to agglomerated settlement whose inhabitants are primarily engaged in non-agricultural activities.
<u>Explanation</u>:
A place is said to be city if the urban settlement has been legally incorporated into an independent self-government.
The activities that are not related to agriculture are known as non-agricultural activities. Construction, mining, handicrafts, transport etc. are some of the non-agricultural activities.
The central of the city and its surrounding suburban areas are concluded as urbanized area. The urban area is crowded with heavy population and buildings. The people in the city are mostly engaged into activities other than agriculture.
The difference between a hypothesis and a prediction is that a hypothesis is a tentative idea or question that is waiting for evidence to support or refute it, while a prediction is a guess at the outcome of a hypothesis. Also, a hypothesis comes first before the prediction.
Biological, nutritional, chemical, physical, and social are the five agents recognized today. As Germ theory provided a framework for understanding the causal agents of disease.
<h3>What is Germ theory?</h3>
The germ theory is a school of thought in medicine that holds that some diseases are caused by tiny, microscopic, body-invading organisms that can only be seen under a microscope.
The "one pathogen to one disease" paradigm was built on the germ concept of disease, which Robert Koch put forth in the late 19th century and had an impact on the development of diagnostic microbiology in medicine.
Thus, Biological, nutritional, chemical, physical, and social are the five agents recognized today.
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