What four organ systems are used when running?

The shift of a vehicle's weight around its center of gravity is known as

The energy available as a result of the motion of a body is called energy. -potential -gravitational -kinetic -chemical

Compare and contrast cladistics and phylogeny. what are their advantages and disadvantages? which is the most useful in understanding how an organism developed into its current form? which concept most strongly supports your opinion about the origin of any given organism?