Which structure can be removed without any repercussions (further issues) to the body, but is not considered a vestigial structure?
a- appendix
b- pancreas
c- liver
d- gallbladder

Nucleic acid certain protein cell membranes certain carbohydrates

What sentence best supports the statement that hormones are involved in the regulation of homeostasis? a. the hormone erythropoeitin increases the production of red blood cells when oxygen levels are low. b. the hormone oxytocin promotes labor contractions of the uterus during childbirth. c. the hormone melatonin induces sleep and its production is slowed by exposure to light. d. the hormone cortisol suppresses the immune system and is produced when the body is under stress.

Study this image which statement best describes the rock shown check all that apply