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What role did lichens play in the process for sequestering organic matter approximately 600 million years ago?
Q12: What are banded iron formations?
Q13: How does the subtropical jet stream flow?
Q17: If you worked at a nuclear plant
Q25: The base of the food chain at
Q43: Explain how planned flooding events in the
Q49: Discuss seafloor spreading during the Late Cretaceous
Q52: Methane gas is stored in sea-floor sediments
Q55: Most beach sand is formed by weathering
Q57: The desert region that covers portions of
Q77: Global sea level change can occur three