Where is new crust being added?
continent
deep sea trench
slope
island

Question#29: why does the tropical ocean have a greater temperature range than the temperate ocean?

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.

Chloroplasts and bacteria are in size. a. similar b. at different ends of the size range c. exactly the same d. none of these