To analyze the statements and determine which could apply based on the information given, we need to consider the law of superposition and how magma behaves in relation to geological layers.
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A. Magma exists below Earth's crust.
- This statement is true. Magma is indeed found beneath the Earth's crust.
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B. Magma can push through holes or cracks in the crust.
- This statement is also true. Magma can force its way through the crust when it finds weaknesses.
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C. All magma intrusions result in volcanoes on Earth's surface.
- This statement is not true. While many magma intrusions lead to volcanoes, not all do (e.g., some may cool underground and form plutons).
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D. Layer A must exist at higher temperatures than the other layers.
- This statement can be generally inferred if layer A is directly related to magma or volcanic activity, implying it would be at a higher temperature than surrounding solid layers.
Based on the evaluation of the statements:
- A and B are both valid and applicable conclusions.
- C is not a true statement, so it cannot be included.
- D could be applicable given the context that it discusses the relationship of temperature with respect to layer A.
From this reasoning:
- The applicable responses are A: A and D and B: A, B, D.
Since we cannot select individual parts of the correct responses together, we conclude with the best option: A and D.
Therefore, the correct answer is A: A and D.