Which of the following is true of carbon dioxide concentrations in North America?
A) Concentrations fall from spring through autumn
B) Concentrations increase from spring through autumn
C) Concentrations fall from autumn through Spring
D) Concentrations levels are constant through the year
E) There is no discernible pattern of concentration
Answer: A
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Which of the following choices best describes the common phosphorus reservoirs in the ecosystem?
a. Water b. water and organisms c. atmosphere and geosphere d. rocks and marine sediment e. water, organisms, rocks and marine sediment
What cyclical factor helps explain the cool period in Nome between about 1945 and 1975?
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?
Grasslands have a high resilience and therefore can recover quickly following a fire.
Answer the following statement true (T) or false (F)
Which of the following species has been impacted by climate change?
A. Polar bears B. Bowhead whales C. Pacific salmon D. None of the species have been impacted E. All of the species have been impacted