Biological classifications have changed over the years. what is probably not a reason for these changes?
group of answer choices

scientists change the names of taxonomic groups to match current nomenclature.

scientists learn more about the genetic sequences of organisms, and thus how they are related.

scientists learn more about the evolutionary histories of organisms through the fossil record.

new species are discovered that challenge old classifications.

species x and species y belong to the same domain. species y and species z belong to the same kingdom. based only on this information, which of the following can be determined for certain?
group of answer choices

species x and species z belong to the domain

species x and species y belong to the same kingdom

species y and species z belong to the same phylum

species y and species x belong to the same phylum