As I described in class, natural herbal remedies a. may be contaminated with heavy metals. Evolutionary scientists say that a. humans are close relatives of primates because of a high degree of genetic similarity. This type of research is a. in vitro. Drug A inhibits the activity of Drug B when taken in combination. Scientific theories are more widely accepted by other scientists if the theory a. has never been tested.
Positive feedback is always abnormal and leads to homeostasis failure.
Negative feedback begins when a variable is beyond its tolerance limits. Negative feedback works in the opposite direction of a stress. Carbon C b. Hydrogen H c. Water a. comprises most of our extracellular fluid.