Answer:
The five main latitude regions of Earth's surface comprise geographical zones[1], divided by the major circles of latitude. The differences between them relate to climate. They are as follows:
The North Frigid Zone, between the North Pole at 90° N and the Arctic Circle at 66° 33' N, covers 4.12% of Earth's surface.
The North Temperate Zone, between the Arctic Circle at 66° 33' N and the Tropic of Cancer at 23° 27' N, covers 25.99% of Earth's surface.
The Torrid Zone, between the Tropic of Cancer at 23° 27' N and the Tropic of Capricorn at 23° 27' S, covers 39.78% of Earth's surface.
The South Temperate Zone, between the Tropic of Capricorn at 23° 27' S and the Antarctic Circle at 66° 33' S, covers 25.99% of Earth's surface.
The South Frigid Zone, from the Antarctic Circle at 66° 33' S and the South Pole at 90° S, covers 4.12% of Earth's surface.
Earth's climatic zones
Ice cap
Tundra
Boreal
Warm temperate
Subtropical
Tropical
On the basis of latitudinal extent, the globe is divided into three broad heat zones.
Energy production/acid rain<span>, nuclear power/waste, </span>air pollution<span>/climate, heavy metals, pesticides, water </span>pollution<span>, solid waste, and unforeseen accidents.</span>
Answer: Some geographic areas have obvious natural advantages that result in cluster formation. For example, proximity to a large port will attract exporting firms or areas rich in minerals will attract clusters of mining firms. In addition, there are three well-established reasons why firms choose locate in close proximity. The cost of transporting goods is reduced when firms are located close to their customers or suppliers. Input suppliers can exploit economies of scale in large clusters of downstream firms who, in turn, benefit from timely delivery and lower inventory costs.
Explanation: There are various types of clustering are that include:
^ Connectivity-based Clustering (Hierarchical clustering)
^ Centroids-based Clustering (Partitioning methods)
^ Distribution-based Clustering.
^ Density-based Clustering (Model-based methods)
^ Fuzzy Clustering.
^ Constraint-based (Supervised Clustering)
Between 50-80 years or even more than 80 sometimes
