Latitude, elevation, and nearness to large bodies of water are factors that influence the annual heating degree-day pattern appearing on the map you analyzed. of these three factors, is generally the most important for the vast majority of the coterminous u. s.

Of the three factors mentioned above, the most important one for the vast majority of the coterminous US is latitude, this is because latitude marks the main climatic zones of the earth. Latitude is an angle which ranges from zero degree at the equator to ninety degree at the poles. Latitude together with longitude is used to specify the precise location of features on the earth surface.

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