Cause they like to f**K
diffusion
Diffusion.
the answer to this question is the circulatory system
Blood and oxygen are transported by the circulatory system.
Materials within a cell are transported by organelles such as vesicles and the endoplasmic reticulum. Between cells, materials are transported by the circulatory system, which includes blood vessels and the lymphatic system. Proteins such as transporters and channels also assist in transporting materials across cell membranes.
oxygen
Your an idjit
hormones from the endocrine system are transported through blood
Carbon dioxide
The circulatory system is responsible for the movement of materials throughout the body. These materials include nutrients, wastes, oxygen, hormones, and immune materials.
Energy is transported around the body by blood circulatory system into the body cells
The circulatory system, like the water system, continually reuses the same materials.