Question

in august 2014, the glines canyon dam was taken apart and removed from the elwha river in washington state. conservationists removed the dam because it was no longer needed and because doing so would allow them to restore the river. the benefits went beyond just the river itself, though. the nearshore environment, which is the region along the shore offering feeding areas for fish, has improved significantly since the removal of the dam. as a consequence, salmon have returned to the river. the seafloor near the mouth of the river rose about thirty-three feet, which had the effect of creating a new delta. due to the sediment brought down the newly flowing river, a beautiful sandy beach has formed along the shore. match each cause with its effect. sediment was deposited along the river. the seafloor rose. the nearshore environment improved. cause effect salmon returned. a new delta formed. a beach developed.

Explanation:

1. For the effect "Salmon returned", we look for the cause related to the environment that salmon need. The text says "The nearshore environment... has improved significantly since the removal of the dam. As a consequence, salmon have returned to the river." So the cause is "The nearshore environment improved."
2. For the effect "A new delta formed", the text states "The seafloor near the mouth of the river rose about thirty - three feet, which had the effect of creating a new delta." So the cause is "The seafloor rose."
3. For the effect "A beach developed", the text says "Due to the sediment brought down the newly flowing river, a beautiful sandy beach has formed along the shore." So the cause is "Sediment was deposited along the river."

Answer:

• Cause: The nearshore environment improved. ; Effect: Salmon returned.
• Cause: The seafloor rose. ; Effect: A new delta formed.
• Cause: Sediment was deposited along the river. ; Effect: A beach developed.