Who discovered the Ganges?

What is the triangle-shaped collection of dirt where a river reaches the ocean? Ocean water has a salinity of 35 parts per thousand. Fresh water has a salinity of less than 0.5 parts per thousand. What can you conclude from this information? Why are the rivers green? What famous river flows across Russia into the Caspain sea? How are supervolcanoes formed? What are 4 African regions that make up the area surrounding the Niger River? Why is the cross sectional area the greatest in the lower course of the river? Does the Colorado River go through Arizona? Do grasslands have lakes or ponds? What can visitors do in Grand Teton National Park? What bird do you see at the beach a lot that has the letter v except from seagull and pelican? In what state is the Colorado Desert located? What type of transport do they use in the desert? What effects do TNC's have on indigenous people in the rain forest? Why do the Indians worship rivers? Why was the golden gate bridge needed? Is marine algae a reef plant? What type of volcano is Yellowstone national park? What is the correct way to build a privacy fence and still be a good neighbor? What are streams with bars islands and divided channels called?