1. to be useful, a scientific name has to refer to
all living species.

all living and extinct species.

all species in one habitat.

a single species.

2. several different classes make up a

kingdom.

phylum.

family.

genus.

3. which are the two highest-level taxa in the linnaean system?

kingdom and order

domain and phylum

phylum and kingdom

genus and kingdom

4. animals that are warm-blooded, have body hair, and produce milk for their young are grouped in the class
amphibia.

mammalia.

aves.

reptilia
5. the only "natural" taxa in linnaeus's system is the
phylum.
kingdom.
genus.
species.