Answer is (C) It lacks quality experiments.
Phrenology is the study of the brain by looking at the size and the shape of cranium i.e., the skull. The study relies on empirical evidences that someone intelligent will have a bigger brain or will have a larger skull than a average person. These evidences however have no biological proof as they were not examined by conducting experiments. The study also rejected unsupported claims that a person with a smaller brain or skull size can be intelligent. Hence such a study or phrenology is considered a pseudoscience.
<span>Which type of immunity defends against any type of invader?
</span>
Answer : Nonspecific
A. <span>There is almost no association between the variables.</span>
<u>Answer</u>:
Option B. a positive feedback loop
<u>Explanation</u>:
This happens when the product of the reaction is more than that of the reaction. In homeostasis this type of positive feedback loop that can move away. It exacerbates the effect of small disturbance. It also strengthens the change in physiological condition body rather than reversing the change. A slight change in the normal range will result in greater change, and hence the system diverts more from the normal range. It can only be considered normal with definite end point.
