The genus Dahlia is situated in the Asteroideae subfamily of the Asteraceae, in the Coreopsideae tribe. Within that tribe it is the second largest genus, after Coreopsis, and appears as a well defined clade within the Coreopsideae.
Aerobic respiration. Definition. noun. (1) A form of cellular respiration that requires oxygen in order to generate energy. (2) The process of generating energy by the full oxidation of nutrients through Krebs cycle where oxygen is the final electron acceptor.
Aerobic literally means relating to, involving, or requiring free oxygen, and refers to the use of oxygen to adequately meet energy demands during exercise via aerobic metabolism.erobic exercise and fitness can be contrasted with anaerobic exercise, of which strength training and short-distance running are the most salient examples.