Here's why:
* Domain: The broadest level of classification, encompassing all living organisms. Humans and plants both belong to the domain Eukarya, meaning they have cells with membrane-bound nuclei.
* Kingdom: Humans belong to the kingdom Animalia, while plants belong to the kingdom Plantae. These kingdoms have distinct characteristics, such as the ability to move (animals) and the ability to produce their own food through photosynthesis (plants).
While humans and plants share a common ancestor at the domain level, they diverged significantly over billions of years, leading to the vast differences we see today.