Gloria wants to get if the amount of air pressure in a soccer ball affects how far the ball will roll. She purchases five soccer balls that are all the same size and a ball pump with a pressure gauge attached. She constructs a device to hit the ball and chooses a smooth, flat surface for the ball to roll on. She has a log ready to record her data. What should Gloria do before beginning her experiment

Classify the structures as homologous or analogous, depending on their structure and function.

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.

Based on the data in the graphs do you think pepsin and trypsin are found in the same part of the body? explain your answer.