<span>Stem cells are found in multicellular organism,they are undifferentiated in nature and can form other special cells or could divide in further stem cells by mitosis.The person with brain or spinal cord injury would be interested cause these cells could be used in future to cure the problem.Human embryonic stem cell (HESC) research is ethically and politically controversial because it involves the destruction of human embryos.The resource used was paper by B Lo named 'Ethical Issues in Stem Cell Research'.And according to me research in this field is important for development of mankind</span>
Are their any choices for this or is this a written response?
The answer to this question would be: foraging and <span>protection
Cooperative hunting needs a big amount of number. It also poses a danger to the member as the animal you hunt can fight back. If you only herding, the amount of the people can be used for foraging or even protecting the worker.
Division of labor can be done in hunting too. Aerodynamic and hydrodynamic efficiency is used when bird or fish doing the migration. Their formation can make less energy used when moving in big number compared to when they moving alone.</span>
Answer:
Primary consumers eat only plants; secondary consumers eat other consumers
Explanation:
