Aristotle (320 BC) classified all living things as plants or animals. In the 1600's English
scientist John Ray developed the idea of species. But our modern classification
was originated by scientist Carolus Linnaeus. In this system, all living things are
organized or layered by a 7 fier level. Which is the correct order going from
general to the most specific?

humans, along with other animals and plants, have linear chromosomes that are arranged in pairs within the nucleus of the cell. the only human cells that do not contain pairs of chromosomes are reproductive cells, or gametes, which carry just one copy of each chromosome.

answer: land bridge theory. land bridge theory held that shifting portions of dry land explained the finding of identical species on different continents. plate tectonic theory eventually eliminated the land bridge theory.