It might knock the old theory away completely because all of the new knowledge doesn't support the theory or it could change it because some of the new information supports the old stuff.
I would go for D or A! :)
The answer is
"Ecology".<span>As various other researchers, Ecologists, regularly utilize
models to help comprehend complex issues. Ecological systems are frequently
demonstrated utilizing PC simulation. PC simulations can consolidate a wide
range of factors and their effects. This is one reason they are valuable for modeling
ecology. PC simulations are likewise working models, so they can demonstrate
what may occur in ecosystem after some time. For instance, simulations of
global warming have been utilized to make expectations about future
atmospheres. And field study is the key element to investigate ecological
systems based on which at times are prepared the computer simulations.</span>
I think its plants because they don't have a skeleton like the rest of us have.