No, rivers can have different elevations. If all rivers had the same elevation, there would be a lot fewer waterfalls!
Yes, rivers have slopes. All rivers have land around them that is at a higher elevation that the river itself. When it rains, the rainwater flows down the slope and into the river.
youthful stream
No The Ocean Is Not
No some rivers can become wider, smaller, deeper and narrower. not all of them follow the same pattern.
200 feet
The two major rivers in the western region of the United States are the Missouri and Colorado rivers.
Actually many rivers run north in North America. Water has no sense of direction. If flows downhill by gravity. Most rivers east of the Rocky Mountains do flow in a southerly direction because the elevation is lower to the south and they are flowing toward the Gulf of Mexico. Source: Riverlorian.com
No they all differ
The isoline denoting all points at the same elevation is called a "contour line." Contour lines are used in topographic maps to represent terrain elevation, allowing readers to visualize the shape and slope of the land. Each line connects points that have the same elevation above a reference level, typically sea level.
No, all rivers are different and no two are the same. A river will differ in numerous ways - usually always by length, by water volume etc.
If you are asking the elevation of the Atlantic ocean that would be 0 feet because all elevations on this earth are described in relation to sea level in other words the elevation of the oceans(all the same) being zero.
The geographical features shared by all four ancient empires include a coastline, rivers, and low elevation.