Final answer:
Logistics clusters around Pennsylvania's fracking industry are examples of industrial agglomeration, where businesses related to fracking benefit from co-location, sharing services, infrastructure, and markets.
Step-by-step explanation:
Logistics clusters that have located around the fracking industry in Pennsylvania are examples of industrial agglomeration. Agglomeration refers to the phenomenon where industries and businesses cluster in a particular area because of various advantages such as shared services, infrastructures, and markets. These clusters benefit from the co-location with other similar or related industries, creating a network of interconnected businesses that support each other. The fracking industry, specifically, draws various logistic businesses due to the need for specialized equipment, materials, transportation, and services that are critical for the operation of fracking sites.
In regions rich in natural resources such as Pennsylvania, where the fracking industry is prevalent, clusters form due to the need for support industries that provide services like transportation of materials, construction, and maintenance of infrastructure, and management of resources. This is an example of how economic activities are affected by factors such as the availability of resources and the growth of a particular industry. These economic activities create jobs and support the local economy, making them significant features of regional development.