It is possible but it isn't probable for the human ecosystem to return to it's original natural ecosystem. The first barrier to humans living in the natural ecosystem is the number of humans that occupy the earth; the natural ecosystem can't provide the quantity food and fresh water necessary to support the number of people necessary without artificial intervention. For the human race to be able to survive in the natural ecosystem, there would have to be an extreme reduction in the number of people living on earth.
That describes only one barrier, there are many more. For example, people's knowledge of survival in the natural world; the necessity of removing the artificial supports of society, such as systems of Law and Order, social systems designed to live in the modern world; and people providing for their own needs using only what nature provides.
Probably the biggest barrier to returning to a natural ecosystem, even if the human population found itself reduced to the point that this could be possible, is the trait of humans that got us to this point in civilization as we know it; that is the human drive to manipulate the environment by improving, inventing, and exploring ideas. That trait alone would have the human race quickly building a new, man made ecosystem.
Anything is possible
Ecosystem disruption can be defined as the affect on the environment where human subsistence has altered the face of the environment to the extent that survival of a species is threatened.
Ecosystem. The same way you already wrote it.
It is not possible because they are not in the same family. Can only mix DNA in ones family.
because as such animals are in the ecosystem on this planet is called earth
they are the same
No.
Hector's dolphin shares its coastal marine ecosystem with various species, including the New Zealand fur seal and various seabirds like the Australasian bittern. These animals coexist in the same habitats, often relying on similar resources such as fish and invertebrates for food. Additionally, the coastal waters are influenced by human activities, which can impact all species in the ecosystem.
Assuming you mean "puke" it's quite possible as his digestive system is the same as that of a human
No. Ecosystem is where the orginism lives. Adaptation is something about the orginism that helps it survive.
No, it is not possible to put jellyfish DNA into a human and have the human glow. The glowing property in jellyfish comes from a protein called green fluorescent protein (GFP), which would not work the same way in a human body due to differences in biology and genetic makeup.
Full of people.