Three of the major characteristics used to classify organisms are cell structure, mode of nutrition and cellularity. These characteristics help scientists determine how organisms are similar to each other as well as how they are different from each other.
Thcfcxxfxfxfxfxfxrxesdtfghbvcxdfgvcxdfvcxdfgvcdfgv
Have a lot of mitochondria so that more respiration providing muscles with more energy for muscle contraction
Hope it’s useful