Answer:
The best way to determine if these populations form part of the same species is to study the existence of reproductive isolation between populations. Moreover, the result of an experiment based on the study of reproductive barriers may be complemented with molecular biology approaches that determine the level of sequence homology between populations
In surgery yes. it would hurt without it and nobody would get surgery and surgeons would have no job. <span />
Correct answer: A) The eradication of childhood illnesses
Stem cell are the type of biological cells that have the ability to differentiate into other cell type and can divide to produce different types of cells in the body. They are called regenerative cell which renew itself, they are found in multi-cellular organism.
It can be used as a renewable source of cell replacement and tissue, it can treat serious and common type of disease without organ surgeries and transplantation. It can treat spinal injury, heart disease, diabetes, stroke and osteoarthritis. It has been successfully used in bone marrow transplantation.
Hence, the correct answer would be the eradication of childhood illnesses
Answer:
Primary succession is the type of succession which occurs in areas where there was no form of life before or it occurs in areas where the previous form of life has fully been eradicated with not even the soil present from that ecosystem. For example, a land where lava eruption has occurred.
A secondary succession is the type of succession which occurs in areas where there was life before which was removed by natural disasters like fire, flood or by human activities. This kind of areas might have the soil texture and composition to support life again. But for primary succession, the rocks will eventually have to be broken down and soil particles would form with the passage of time. Then only the land will be able to support life. Hence, primary succession takes longer to occur.
