refers to the ecological process involved in the concentric zone model in which a new category of people or type of land use arrives in an area previously occupied by another group or land use.

Invasion

Explanation:

Invasion refers to the ecological process involved in the concentric zone model in which a new category of people or type of land use arrives in an area previously occupied by another group or land use

Concentric zone model is a one of the first theoretical  model created by Ernest Burgess in 1925 in a bid to explain urban social structures . the model views  cities as a series of five circular rings or zones that starts from a central district or area usually a business district

the correct answer is the following is a list of inventions made in the medieval islamic world, especially during the "islamic golden age" (8th to 13th centuries),[1][2] as well as the late medieval period, especially in the emirate of granada and the ottoman empire.

science and technology in the islamic world adopted and preserved knowledge and technologies from contemporary and earlier civilizations, including persia, india, china, and greece-roman antiquity, while making a number of improvements and innovations.