Question

Recently, scientists have found organisms living near volcanicvents on the ocean floor. Although no sunlight reaches the depthsat which these organisms live, they are still able to produce theirown food. What is the BEST conclusion scientists can make afterdiscovering these organisms?A. Only marine organisms can produce energy withoutsunlight.B. Only large organisms can survive in harsh environments.C. Some organisms can survive without energy.D. Some organisms have adapted to using an energy sourceother than sunlight.

Answer 1

In this case, we have an entire ecosystem living on the thermal vents, so we have a primary source of energy and predators, as for this particular situation, producers cannot work with sunlight so probably we are in the presence of chemoautotrophs, therefore the propper answer is option D.