No, rivers can have different elevations. If all rivers had the same elevation, there would be a lot fewer waterfalls!
No some rivers can become wider, smaller, deeper and narrower. not all of them follow the same pattern.
No, coastlines can erode at different rates depending on factors such as the type of coastline (rocky vs sandy), wave energy, climate, and human activities. Some coastlines may erode faster due to stronger wave action or storm surges, while others may erode more slowly due to protective measures or natural features.
No they all differ
Calories are calories, no difference between then - they all burn at the same rate.
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.
baud rate = symbol rate= modulation rate all the same thing
No
No, they do not.
no unless you were to pollute all the rivers or chop down all the trees before others grew.
It is a rate of change that is not the same at all points - in time or space.
No the Nile is the longest if them all, they are all different lengths