Give 5 different ways physical barriers can be formed and give real world examples.

If the frequency of the p allele is .63 in the population then what is the frequency of the q allele?

Which of the following types of rock would most likely contain a fossil? slate granite lava rock limestone

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.