Answer:
Traits other than beak type might affect natural selection.
It could take many generations to observe adaptions to a population.
The environment may be complex and hard to study.
Changes in the environment may occur faster or slower than changes to the birds
The birds may be interdependent with other organisms that may change, too.
Explanation:
120.701 km/h is the speed of the train,
so your method/conversion amount is correct
The region of the vertebral column that is most accessible from a posterior surgical approach is the sacral region.
The vertebral column is popularly known as the spinal cord or the backbone. The structure of the vertebral column provides a semi-rigid function of the structural framework of the body. It also aids support and movement of the body skeleton.
The vertebral column is categorized into five regions:
- cervical
- thoracic
- lumbar
- sacral
- caudal
On the other hand, a posterior surgical approach is applied in the hip replacement process for people suffering from arthritis. The hip is located in the sacral region.
During this surgical approach, the arthritis is being removed and it is being substituted with a metal cup in the socket area and a metal stem at the base of the femur.
Therefore, we can conclude that the vertebral column that is most accessible from a posterior surgical approach is the sacral region.
Learn more about the vertebral column here:
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