What cyclical factor helps explain the warm period between about 1975 and 2005?

The question is based on Figure 24-6, a chart showing average annual temperature from 1905 to 2015 in three U.S. cities: Nome, Alaska; Bozeman, Montana; and Tucson, Arizona.
What will be an ideal response?


The positive phase of the PDO.

Environmental & Atmospheric Sciences

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In a terrestrial food web, which of the following categories of organisms will have the highest total energy content and biomass?

A) Primary producers B) Carnivores C) Consumers D) Herbivores

Environmental & Atmospheric Sciences

Tailings left over after uranium ore processing can themselves present a radiation hazard.

Answer the following statement true (T) or false (F)

Environmental & Atmospheric Sciences

The same side of the Moon is always visible from Earth

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

A gently sloping mountain landform built from effusive eruption is known as a

A) cinder cone. B) shield volcano. C) crater. D) caldera. E) pluton.

Environmental & Atmospheric Sciences