How can tree rings provide information about past climates?
A) Thickness and spacing of tree rings reflect environmental conditions
B) Tree rings turn colors depending on the climate
C) Tree rings trap gas bubbles that can be used to interpret atmospheric conditions
D) Tree rings can measure past CO2 concentrations
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Q3: Which of the following spheres is not
Q4: The _ refers to water in solid
Q5: What is the molecule for ozone?
A)O2
B)CO2
C)O3
D)H2O
Q6: _ are small solid or liquid particles
Q7: Which two gases make up the majority
Q9: What materials are sampled to study 16O:18O
Q10: Which planktonic marine organism, often found in
Q11: What percentage of solar radiation is reflected
Q12: What material makes up the shells of
Q13: Which of the following oxygen isotopes is
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