Studies assessing the amounts of different carbon isotopes (12C, 13C, and 14C) in the atmosphere were important because they provided evidence that human activities were in fact adding CO2 to the atmosphere. This is an example of what type of relationship?
A) correlation
B) causation
C) conduction
D) antagonism
Correct Answer:
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Q1: Which of the following equations is
Q3: As shown in Figure 25.1 below, atmospheric
Q4: A positive feedback is one in which
Q5: Which correlates CLOSEST with the net increase
Q6: When looking at the carbon isotopes present
Q7: If plants consume CO2 during photosynthesis, why
Q8: What can Antarctic ice core samples tell
Q9: Which of the following processes are typically
Q10: In reviewing historical records and ice core
Q11: The process of cellular respiration consumes _
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