The answer is B)allopatric speciation.
The two major subdivisions of the nervous system
- Central nervous system (CNS)
- Peripheral nervous system (PNS).
- The brain and spinal cord make up the central nervous system; the rest of the body is made up of the peripheral nervous system. The brain receives signals from the spinal cord to process.
- The cranial cavity of the skull houses the brain, while the vertebral cavity of the vertebral column houses the spinal cord.
- The word "peripheral nervous system" refers to the location of the nervous system, which is outside of the brain and spinal cord.
- Saying that the CNS is what is inside these two compartments and the peripheral nervous system is what is outside of them is a bit oversimplified, but it is one way to begin to think about it.
- The distinction between central and peripheral nervous systems is not always universal and depends on several features of the nervous system. In reality, a few peripheral nervous system components are located in the cranial or vertebral cavities.
- The nervous system's "power plant" has been referred to as the peripheral nervous system. It functions similarly to a system that gathers data and issues commands.
- The autonomic nervous system and the sensory-somatic nervous system are the other two divisions of the PNS. Later on, both will be covered in more detail.
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Answer:
B
Explanation:
The Earth is tilted 23.5 degrees on its vertical axis. During the northern hemisphere's spring and summer, the northern hemisphere is tilted towards the Sun.
