I honestly don't know, but my best guess would be the highly concentration salt solution because usually salt dehydrates things.
They could place the cup under a large tree because the tree can provide shade from the sun, which will help cool the water down.
I’m unsure as to if you have a question or not, but to be honest, this message is my mood rn.
Answer: The U.S. Court of Appeals for Veterans Claims was established by Article I of the Constitution to review decisions of the Board of Veterans’ Appeals (BVA), which is part of VA. This court has exclusive jurisdiction over these types of cases.
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