Match the climate data to the appropriate description.
1. Bubbles in Ice Cores
2. Stable isotope ratios
3. Stratigraphic record (rock layers)
4. Pollen
5. Tree rings
6. Atmospheric Carbon Dioxide Concentration
7. Atmospheric Temperature

Definitions

A. Sampled from shells and used to reconstruct millions of years of climate history
B. Instrumental, live measurements taken since the late 1950's
C. Sediments analyzed to deduce environment at the time
D. Indicator for plant types that existed during the time of their deposit
E. Provide information about rainfall in the area up to 10,000 years ago
F. Instrumental, live measurements taken since the 1800's
G. Provide samples of past atmospheric gases that are correlated with temperature, can reconstruct 800,000 - 2 million years of past climate