Elephants around the world are being poached for their ivory tusks. Given this specific scenario, the mutation that does not allow elephants to develop tusks (tuskless) would: A. be a disadvantage for the elephant
B. be an advantage for the elephant
C. have no consequence to the elephant
D. depend on the region the elephant lives in

How does the author's purpose in this passage differ from an author writing about her personal struggle living with asthma?

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen

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.