One reason is because they consist of many different types of tissues.
A good amount over the years to break the ozone layer and the suns rays would be way to hot if the pollution breaks through the ozone layer
Answer:
There are six of them, based on the common compound that they are synthesized
Explanation:
The family of L- glutamate come from the cetoglutarate compound from the Kreps cycle. The family of L-serine, come from 3 - phosphoglicerate compound from the glucolisis. The L - aspartate family, that come from oxaloacetate compound, from the Krebs cylce. The piruvate family that come from the piruvate, from the glucolisis. The aromatic aminoacids, that come from eritrose - 4 - phosphate, from the pentose cycle. And the L histidine family, that come from the ATP.
The answer to this question would be B. the use of stem cells is without any objections since it can be used in therapies to help humans.
The use of stem cell has many controversies, mostly in the religious group that is pro-life. Since the cell of a zygote is totipotent and be able to differentiate into the most type of cell, it is better to use zygote cells. But some religions consider that cell is already human after fertilization, thus using zygote cells is considered as killing a human.
Human blood cell and umbilical cord are multipotent. There should be no pluripotent in the adult by default, but there <span>is </span>some research about induced pluripotent stem cell (IPSCS) in the adult.