It's your birthday and you splurge with a big slice of chocolate cake, heavy on the icing. shortly afterwards, your blood glucose levels rise until an endocrine mechanism (secretion of insulin) counteracts this rise and glucose levels decline. the initial change in blood glucose and insulin response that follows is an example of positive feedback. homeostasis. lack of homeostasis. physiological constancy. diffusion.

The table below shows data for a population of fish in a pond. fish body color # of fins scales? tail shape a silver 4 yes fan b pink 4 yes flat c black 4 yes fan d orange 4 yes flat e orange 4 yes fan f silver 4 yes flat which of the above characteristics would be most in developing a classification system for the fish? a. body color and tail shape b. presence of scales and tail shape c. body color and number of fins d. number of fins and presence of scales