Question

Which two sentences describe why classification systems are still changing?

A. Scientists utilize new technology to find genetic evidence through
DNA testing.
B. Scientists often decide that different characteristics should be
used as evidence for grouping organisms.
C. Scientists realize that species are more accurately classified
using simpler systems with fewer hierarchical levels.
D. Scientists discover new evidence that changes how organisms
are grouped.

Answer 1

Classification systems change due to new scientific knowledge and advances in technology, particularly DNA testing, which allows for better understanding of evolutionary relationships and may lead to reclassification of organisms.

Step-by-step explanation:

Classification systems are still changing primarily because of advancements in scientific knowledge and technology. Two sentences that describe why classification systems are still changing include:

Scientists utilize new technology to find genetic evidence through DNA testing, which can lead to reclassification of organisms based on molecular systematics.

Scientists discover new evidence that changes how organisms are grouped, as ongoing research often reveals more about the relationships between species, leading to updates in phylogenetic trees and classification systems.

As new data is gathered from DNA analysis, fossil records, and morphological studies, scientists can better understand evolutionary relationships, which may result in the reclassification of species within the "tree of life." Classification systems evolve over time to reflect our most current understanding of life's diversity.