Gustaf observes a chemical reaction between two substances in a glass beaker. while observing the reaction, he touches the beaker and notices that it feels warm. why does the beaker feel warm?

This aquarium exhibits biotic and abiotic factors in an aquatic environment. one of the abiotic factors is

What is the difference between bacterial infections and viral infections?

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.