The only “natural” taxa in linnaeus’s system is the
a. phylum.
b. kingdom.
c. genus.
d. species.

The correct answer would be D. species.

Natural taxon refers to the group of organisms which exists in nature as a consequence of evolution.

In Linnaeus's system, the only natural taxon is "species".

Species refers to the group of organisms in which two organisms of opposite or appropriate genders can produce a viable offspring.

its like this, "if i give a plant an unlimited amount of sunlight,then the plant will grow to its largest possible size."

hope it let me know if it does or doesn't =^-^=

b. the carbon cycle ensures living things have a source of hydrogen