Because to actually use the word evolve an organism must suffice more than one condition, which in this case would be an advantageous trait. Having an advantageous trait (from our eyes at least) must also include the right and stimulating enviironment for procreation. So this answer is multifolded.
Species that have a greater gene pool are scientifically proven to survive better than those that have a smaller gene pool. This is because the species has diversity in the genes allowing them to be able to adapt to different situations. The smaller gene pool has less diversity meaning that it cannot adapt as easily. So, the answer is most likely D. Species A will most likely go extinct and species B will continue to thrive.
Answer: fibrous periosteum
<span>The diaphysis is the main shaft of a long bone which is made up of cortical bone which contains bone marrow and fats. It is covered by a fibrous connective tissue called the fibrous periosteum. The cells in this layer are densely packed and contain blood vessels, nerve endings and lymphatic. </span>
