The classification system for organisms has changed from seven levels to eight. this happened because scientific consensus changed as scientists learned more about organisms. scientists did not test the seven-level system often enough to lead to consensus. the eight-level system of classification is an emerging idea that needs more testing. the seven-level system of classification was not supported by scientists.

Option A, scientific consensus changed as scientists learned more about organisms.

Explanation:

With the advancement in technology and further advent of DNA technology scientist were able to categories plan and animals more specifically based on their anatomy, physical and biological characteristics and DNA structure and type.  Until the DNA technology came into force and practical application, plants and animals were classified on the basis of seven categories i.e kingdom, phylum, class, order, family genus and species.The latest addition is of domain and that too was placed above the kingdom in hierarchy.

Hence, option A is correct

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.

earthquakes in florida are rare because the state is not located near any tectonic plates. in fact, florida is tied for first place as having the fewest earthquakes of any state. much of florida is limestone and seafloor materials that is not conducive to earthquakes.

explanation: