With the advancement of technology, many plants and animal were re-classified and reversed. For instance due to the advanced light microscope, which had high resolution and magnification, scientists were able to identify the structure of many organisms on a highly molecular level. Whitaker was a biologist who distinguished that fungi was separate from plants because fungi doesn’t have chlorophyll. Similarly there are so many evidences that resulted in the re-classification of organisms.
The correct answer is option A, classification of organisms
Reason -
Kingdom of an organism, order of the taxonomic levels and use of binomial nomenclature are part of the classification system of a plant and an animal and thus if there is a change in any of these three, it can be stated that classification of organisms has changed. The classification system keeps on updating with discovery of any new species which has been possible with aid of new technologies. Modern technologies inclusive of Genetics , better research equipment and chemicals has unraveled the evolutionary relationships to a finer detail
The fish are eaten by ducks. Ducks cannot really swallow preys that are too big for their throats. They usually swallow organisms that are a lot smaller than fishes. because they do not have the capacity to bite and chew their preys.
