Answer:
C. development of vascular tissue for bulk flow
Explanation:
Hollow bones are always a disadvantage because it means that they are less sturdy and easier for predators to break.
Answer:
amoeba
Explanation:
unicellular are the organism which have single cell.
Answer:
This used use to transfer heat which is dissipated from the body. it is the heat needed to stabilize the body temperature for the cells and tissues to do some biological work.It is also from the heat that enzymes maintain there activity.
Explanation:
