The porcupine is a rodent with an unusual trait. Porcupines have sharp spines or quills that help protect it against its predators. This trait is different from other rodents because of its needle like quills. This animal is also similar to that of a hedgehogs.
Brain. :) that's your answer haha
The answer is B-divergent boundary
<span>Due to the fact that Jack believes in biological causes of mental illness of the four main models of mental illness Jack believes in the biological or medical model of abnormality which ascribes mental instability to Serotonin levels or other biological factors that can not be controlled by the sufferer.</span>