<span>They are Carbohydrates.</span>
In the science world today, both the natural regeneration and stem cell therapy can be used to generate new cells and both processes have thier advantages and disadvantages. The following are the advantages of natural regeneration over stem cell transplants:
1. Natural regeneration is cheaper compares to stem cell transplant.
2. The process of natural regeneration is safe and does not involve the fear of unknown, long time effects like that of stem cell transplant.
3. Naturally regenerated cells can not be rejected by the patient's body but a stem cell transplanted cell can be rejected by the patient's body.
Answer:
Thomas Robert Malthus (born 1766) was a British Reverand and Scholar,. He was nfluential in Political Economy and Demography. Between 1798 and 1826 Malthus published six editions of his famous treatise. THOMAS wrote a book called "AN ESSAY ON PRINCIPAL OF POPULATION." He became known for his theories on population and factors on population growth.
Explanation:
It's the definition of a SPECIES.
Those animals are from the same species.
The valves are responsible for preventing blood from flowing in the wrong direction, they are present in the veins, and the arteries don't need them because the aorta (biggest artery) pumps or in other words pushes it with such a force that no other force can change its direction, in the veins there is no structure present for pumping them as a result we have got valves so that they go in one direction...... the meaning of the word valve is to allow in one direction
