What is the basis for life in the hydrothermal vent community? ...

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What is the basis for life in the hydrothermal vent community?
  a. The heated waters surrounding the vents
  b. Chemosynthetic organisms
  c. Whale falls
  d. The biological productivity of the water above

Question 2

In the Insight to A National Geographic Explorer segment about Sylvia Earles encounter with an
  octopus, we learn that humans are newcomers who have managed to dominate the earth in a relatively
  short time. Why does she have a problem with this? What are some problems that you could envision
  from human dominance What will be an ideal response?

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Answer to Question 1

ANS: B
The bottom water in these communities is enriched with hydrogen sulfide, carbon dioxide, and
oxygen. The specialized Archaea and bacteria are chemosynthesizers which provide the base of the
hydrothermal vent food webs. Information can be found in the section Examples of Marine
Communities

Answer to Question 2

ANS:Answer
should include:
 She says that octopus have been around for billions of years but humans in a short period
of time dominate land, sea, and air.
 She suggests that the changes that we have provoked may be leading to a Sixth major
extinction event
 Reduction in diversity of other life on earth leading to a long-list of potential problems
 Increased pollution and human population growth could deplete the earth, ocean, and air.
 Loss of quality of life, reduction in biological diversity and potential resilience of ocean
ecosystems, reduction of ocean food sources, and reduction of materials from the ocean
(including economic resources).

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