A natural ecosystem is one that is 'wild' and cot created or managed by man. Any area of untouched, natural habitat on the planet Earth is a natural ecosystem and therefore to answer this question you need to ask yourself if you are close to such an area.
It hasn't. Natural selection is a key part of the ecosystem itself.
ecosystem
After a natural disaster in a healthy ecosystem, the ecosystem goes through a process of recovery and regeneration. Natural processes like succession and adaptation allow the ecosystem to gradually restore itself back to its original state. Plant and animal populations may fluctuate, but the ecosystem eventually regains its balance and diversity over time.
What about it?
Look around, since even a changed ecosystem is still an ecosystem
The natural abode, locality or region of an animal or plant., Place where anything is commonly found.
alligator,snake,frog
its natural ecosystem is cold and wet but mostly cold
nature
Normally found around rivers, lakes, bays, where they feed mainly on fish.
found in a specific locality
It hasn't. Natural selection is a key part of the ecosystem itself.
ecosystem
Rhinoceros beetles are found in many different regions and their locality therefore varies. There local name will depend on where the locality is.
The most unique ecosystem found in Arkansas is the Freshwater Ecosystem.
ecosystem
How does Vegetation help with a river Ecosystem?