The human body has living cells that interact with other living cells (Food) and inorganic cells (Salt, Oxygen). It also has a lot of chemical reactions that simultaniously happen inside of it.
Inorganic systems usually do not interact with themselves, and the reactions are mostly exterior.
Plants will usually droop their leaves and wilt on a hot day due the amount of water they're not receiving. This can be advantageous to a plant because this releases moisture in the air called <span>transpiration.
Hope that helps. -UF aka Nadia</span>
