1. Primary
2. Secondary
3. Secondary
4. Secondary
5. Secondary
6. Secondary
it depends on the species DNA compared to another species to determine if the species are related or not. Like the human and the rhesus monkey they are closely related because all the genetic codes have the same DNA except one
Nerve cells may begin to pass messages more slowly than in the past. Waste products can collect in the brain tissue as nerve cells break down. This can cause abnormal changes in the brain called plaques and tangles to form.
Breakdown of nerves can affect your senses. You might have reduced or lost reflexes or sensation. This leads to problems with movement and safety
There are 306 bones in the human body. babies start out with 300 bones, when they grow up these bones grow together to make one large bone. by the time your an adult you'll have exactly 206 bones. half of these bones can be found in your hands and feet!
I believe the correct answer is B. The major function of the spinal cord is that it serves as a major conduit for information flowing to and from the brain. It primarily transmits signals between the body and the brain. Also, ir control many reflexes in the body.