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ARC-Challenge / Mercury_417138 / Estuaries are dynamic ecosystems where salt water and fresh water mix. Usually…

Problem

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question

Estuaries are dynamic ecosystems where salt water and fresh water mix. Usually this happens as fresh water flows from a river to an ocean. When would you expect the concentration of salt in the estuary water to be LOWEST near the mouth of the river?

choices

  • when the river flow is low and the tide is low
  • when the river flow is high and the tide is low
  • when the river flow is low and the tide is high
  • when the river flow is high and the tide is high

Discussion

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Source and history

upstream_id / Original problem ID
Mercury_417138
task_id
5fb35606-f180-586a-a8af-67e7249089e3
task_key
ARC~2dChallenge--test--Mercury~5f417138
task_revision_id
1
config / split
ARC-Challenge / test

Official source

initial import