D. Infrared images can show hot spots as red areas.
<span>The correct answer is b. The open ocean. The definition of an island ecosystem does not have anything to do with water, but simply refers to an ecosystem that exists as a microcosm within a far larger, separate ecosystem. The ocean has lots of separate island ecosystems within it, but it itself cannot be referred to as one.</span>
A unicellular or single celled organism is the term for organisms composed of only one cell.
I hope this helped!
What are the statement choices?