Val works as a paleoclimatologist in Alaska. While studying ice core samples, she identifies an increase in the Isotopic ratio o
f oxygen 10,000 years ago. From this discovery, she knows that Earth's temperature at that time was
Aside from
temperature, Val can also learn about
V from the ice cores. Val's data suggests that she's uncovered a glacial
climate for this time period. During a glacial climate, Val knows, there would have been
sea level, compared to what she
witnesses today
50
드
