Vertebrates have closed circulatory systems their blood flows through blood vessels like veins and arteries and they have a heart to push the blood around the body. thats why the human circulatory is a closed system
Answer:
In almost all countries, the law permits abortion to save the woman's life, and in the majority of countries abortion is allowed to preserve the physical and/or mental health of the woman. Therefore, safe abortion services, as provided by law, need to be available.
Explanation:
Tay Sachs disease is a genetic disorder caused by the mutation in the gene which codes for the enzyme that breaks down the ganglioside in the brain and the spinal cord. The Tay Sachs disease proves fatal to lives as the mutation is involved in the enzyme involved in the metabolism in the brain and spinal cord.
The Sickle cell anaemia is a disease which is caused by the mutation in the gene which causes the change in the cellular structure. The shape of the red blood cells does not prove fatal not all the red blood cells are affected with this and some cells can transport the oxygen.
A. Rapid loss of body heat
