All of the above is the answer
Answer:
The species that make up an ecosystem are connected in complex 'food webs' of eater and eaten. When one species disappears, its predators can no longer eat it and its prey are no longer eaten by it. Changes in these populations affect others. Not only that but the ecosystem would be dramatically different or cease to exist altogether.
Answer:
Model B
Explanation:
It let's more fluids flow through unlike Model A
They obtain energy by consuming other organisms.
Scientific hypothesis can be proven to create a theory but not often fact. In order to be provable it has to be probable. If its not probable it's not possible.