The temperature of a red giant increases rapidly because ________
A) fusion increases and gives off heat
B) endothermic chemical reactions occur
C) exothermic chemical reactions occur
D) friction from the collapse creates heat
E) gravitational energy is converted to heat
E
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Which of the following are single-celled, microscopic protozoans that build their hard shells out of silica?
A) Coccolithophores B) Copepods C) Ctenophores D) Foraminifers E) Radiolarians
Why has San Francisco Bay suffered from pollution and experienced a decline in the quality of its marshes?
A. water diversions from the Sacramento River B. water diversions from the Colorado River C. draining of Mono Lake D. water diversions by the Los Angeles Aqueduct
How did climatic changes influence the evolution of hominids from anthropoids? What will be an ideal response?
When a drill hole first penetrates an oil reservoir, the pent up gases may drive the petroleum to the surface.
Answer the following statement true (T) or false (F)