What is the cause of the hyperpigmentation seen in people with cushing syndrome? a. permissive effects of aldosterone when cortisol levels are altered b. hypersensitivity of melanocytes with sun exposure c. elevated levels of acth d. abnormal levels of cortisol?

How do cells grow and reproduce to maintain homeostasis?

What would happen if the krill were removed from the food web

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 8 options: the cold balloon expands and rises. the warm balloon shrinks and sinks. the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the warm balloon expands and rises. the cold balloon shrinks and sinks.