Respuesta :
Answer:
all the living organisms in an area and their physical surroundings
Explanation:
Ecosystem may be a biological community of interacting organism and their physical environment.
So, the option B is correct that All the living organism in an area and their physical surroundings is best define an Ecosystem.
Ecosystem
An ecosystem is a system consisting of biotic and abiotic components that function together as a unit.The biotic components include all the living things and whereas the abiotic components is the non- living things.
Natural science like Ecology and geography is defined an as a geographical area where organisms, weather and landscapes work together to make a 'bubble of life'.
Thus, the correct answer for the ecosystem is all the living organisms in an area and their physical surroundings.
To know more about the ecosystem follow the link https://brainly.com/question/1673533