To determine which statement is true, we would need to analyze the specific data presented in the graph regarding carbon levels. However, since the details of the graph are not provided here, I can help you understand how to evaluate the statements based on general principles.
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Ecosystem Balance Statements:
- If carbon inputs (carbon entering the atmosphere) equal carbon outputs (carbon leaving the atmosphere), then the ecosystem can be considered balanced.
- If more carbon is being absorbed by the environment than is entering, there could be a carbon sink effect.
- Conversely, if more carbon is entering the atmosphere than is being absorbed, this would indicate an imbalance, contributing to greenhouse gas effects.
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Evaluating Given Statements:
- Statement 1: If the amounts of carbon entering and exiting are not equal, it does not indicate balance.
- Statement 2: If more carbon is leaving than entering, this can indicate a temporary imbalance where carbon is being stored elsewhere, which is not typically sustainable.
- Statement 3: This indicates balance if true; equal amounts entering and exiting suggest a stable system.
- Statement 4: If more carbon is entering than is absorbed, this indicates an imbalance, commonly associated with climate change issues.
To determine the correct statement, you would need to compare the data points on the graph concerning carbon entering and exiting the ecosystem. If you can provide more specific details from the graph, I can assist you in analyzing it further.