Geological Evidence Points to a History of Extended Ice Ages

question 35

Multiple Choice

Geological evidence points to a history of extended ice ages in Earth's history.How did Earth recover from this snowball phase?

• A)The increased ice coverage on Earth's surface absorbed more sunlight than water and rocks,thus gradually heating Earth until the ice melted.
• B)Life vanished,leading to an increase in CO₂,and increased global warming,eventually melting the ice.
• C)Volcanoes continued to inject CO₂ into Earth's atmosphere,increasing the greenhouse effect to the point where ice melted.
• D)Plate tectonics gradually subducted all the ice below Earth's surface.
• E)As the Sun aged,it grew brighter and increased Earth's temperature,melting the ice.

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