Answer:
Concentric circle model
Explanation:
The concentric model was proposed by Burgess. This model defines different social people to live in an urban area. This is a very famous model related to metropolitan cities for development. Many of the social groups are based on their socioeconomic status that stands from central part distance to downtown.
This model is called the concentric model because it defined all social groups in the shapes of the ring from the center part to the outer part. It is also called the Burgess model. The human geography and urban geography involve it in the development of urban metropolitan cities.
Grease the blade via the remaining fitting after removing one of the two zerk fittings for the blade.
For almost a century, Hartzell has dominated the market for aviation propeller systems. For the greatest result for the aircraft designer modification, we provide over 400 various blade designs that may be set in hubs with 2- to 6-blades.
Robert N. Hartzell established the Hartzell Walnut Propeller Company, which later became the American company Hartzell Propeller, in 1917.
For certified, privately made, and lightweight aircraft, it manufactures composite and aluminum propellers. Ohio's Piqua is home to the company's headquarters.
Along with different propeller controllers, Hartzell also makes spinners, governors, ice protection systems, and other devices.
To know more about hartzell refer to brainly.com/question/16930838
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Answer:
When people say "act your age," they are referring to chronological age.
Explanation:
Chronological date can be defined as the date to count how many years a person has lived. The chronological date is mostly used in psychological tests. It is mostly used to compare the actions of a person like intelligence, activeness, etc to his/her age. So, when a person says to act your age, he/she means to take actions according to the experiences you have gained from the years you have lived.
mail boxes? (im so sorry is i got it wrong :( )
