In 1977 researchers discovered hot springs Olivia D @Saylor.org Evolutionary

Question 68 / 120: In 1977, researchers discovered hot springs 2.5 km deep. Surrounding these hot springs were a diverse group of animals including giant tube worms, giant clams, and mussels. The researchers found that the food web began with a bacterial species. The sun's rays can only penetrate approximately 300 m below the surface of water; therefore, the bacteria were not photosynthesizing. Instead the bacteria used hydrogen-sulfide from the hot springs to make their own food. These bacteria would be considered which of the following?

A Consumers

B Autotrophs

C Heterotrophs

D Photosynthesizers

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Evolutionary Biology & Ecology BIO102

Author:

Dr.Olivia D'AmbrogioLecturer

Saylor.org

USA

Access: Public Instant Grading

Attribution: Olivia D'Ambrogio Introduction to Evolutionary Biology and Ecology. (The Saylor Academy 2014), http://www.saylor.org/courses/bio102/ (Accessed 16 May, 2014). License: Creative Commons BY-NC-ND

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