Returns a queue that yields tuples of the old and new values.
The pre-solicitation released this week is not a request for proposals from industry—it states that a draft Request for Proposals is forthcoming. Rather, it seeks feedback from industry and interested stakeholders about an "objectives and requirements" document that outlines the goals of the Mars mission.
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the results on path from the changed input to the root “query”:
Field voles, hedgehogs and other ground‑nesting species rely on dense vegetation, leaf piles and scrub for shelter during the colder months.