These organisms are capable of existing in practically any environment and garnering energy from a variety of sources, ranging f
rom solar radiation to chemosynthesis. They play many different roles in the marine environment, from being the base of the food chain to controlling much of the flow of marine energy and nutrients and being essential to the ocean’s health. What selection(s) from this text about marine microbes supports the argument that microorganisms are critical to survival of other organisms? I. "These organisms are capable of existing in practically any environment". II. "They play many different roles in the marine environment". III. That they are "the base of the food chain". IV. They control "much of the flow of marine energy and nutrients".
A) I and II
B) I and III
C) II and III
D) III and IV
