True, Brackish water is both salty and fresh, Estuaries are important ecosystems, Deltas form at the mouth of rivers, The source of a river can be a glacier, The source of a river can be a fresh spring, Rain contributes to erosion, The Missouri River is the longest in the US, The Colorado River carved out the Grand Canyon, The Mississippi River runs through New Orleans, Rivers flow from high altitude to low altitude, Phoenix is the capital of Arizona, Baton Rouge is the capital of Louisiana, Rivers will create a V-shaped valley, The Gulf of California is the mouth of the Colorado River., The capital of Colorado is Denver, False, The source of the river is the lowest altitude, Creatures do NOT live in estuaries, Deltas form at the source of rivers, The source of a river can be an ocean, The Grand Canyon is in New Mexico, The capital of Arizona is Baton Rouge, The Mississippi River is the longest in the US, The mouth of the Colorado River is the Gulf of Mexico, The Missouri River is NOT a tributary to the Mississippi River, Rivers always flow south, The Rio Grande is NOT part of the border between US and Mexico, Rivers will create a U-shaped valley

River Landforms

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