Pick your answer from:
(a). cracks
(b). chemicals
(c). limestone
(d). crust
(e). headaches
(f). Nutrients
(g). horses
(h). dogs
Given those answer options, answer the question: Fact 1: Organisms cluster around hydrothermal vents in the ocean floor. Fact 2: Background Hot water vents form inside cracks in the ocean floor. Given the two facts above, what do organisms cluster around, in the ocean floor?
A:
(a).