Ecosystems can be changing all the time, but they also dont have to be changing
decay always happens in ecosystems
Music is always changing.
The Coast Is Always Changing was created on 2004-11-22.
The capabilities and available resources of the enemy are always changing.
Unless something like bison or cows keeps the grass from growing, the forest will start growing back.
Ecosystems are constantly changing in response to natural and human disturbances.Conditions become unfavorable for one community and favorable for another.
Always changing
Yes.
If an object is moving in a circle (like a teather ball or a planet in orbit, although orbit is not a perfect circle), then its velocity is always changing (remember that velocity is speed AND direction, and since the direction is changing, the velocity is changing). It's position is also always changing as a result of having a velocity.
Ecosystems
gravity
It is always changing