How many copies of a dna molecule result from two replications of a single dna molecule? 6 2 4 8

The process by which natural forces move weathered rock and soil brim one place to another is called

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.

Anormal strand of dna is shown below, followed by the same strand of dna after mutations have occurred.