As you move higher levels of classification, organisms have?
a. less in common to groups b .more in common with groups, c. vary amounts in common to groups, d. the same amount in common to groups
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If you mean more specific groups where there are less species in a certain classification, as in one is coyotes, foxes and wolves along with others to one where it's only kinds of wolves, than it is b, if you mean less specific where it's more different species, as in flightless birds to all birds, than it is a.

Less stable  hope this