Geography what is the term for a stagnant lake that forms along a winding river due to soil erosion resulting in an abandoned stream, cut off from the river?

Gold is not now being extracted from seawater. why not? a. it would be too disruptive to marine life to develop any marine mineral resources b. there is no gold in seawater c. we don't know how to extract minerals from seawater d. it would be too costly and difficult to separate the small amount of gold from the very large amounts of halite and other minerals

Plants can have a positive and negative effect on the rate of weathering

Where is the world’s shortest commercial runway?