Which of the following statements about the use of prescribed fires in the Everglades is true? a. It controls the amount of moisture in the environment.
It controls the spread of exotic organisms.
C. It helps maintain plant communities.
d. All of the above

What is the difference between an igneous, sedimentary and metamorphic rock

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.

18. over time, how do sand dunes tend to migrate? a. perpendicular to the movement of the wind b. in the same direction as the wind blows c. toward the wind d. in random directions