Which of the Following Could Be a Topic for a Community-Level

question 42

Multiple Choice

Which of the following could be a topic for a community-level study of a hydrothermal vent ecosystem?

• A)the relationships between crabs at the vent and other areas of the ocean
• B)the evolution of a certain species of bacteria in response to the changing composition of the water emitted by the hydrothermal vents
• C)the composition of the water emitted by hydrothermal vents
• D)the interactions between Yeti crabs and other species near hydrothermal vents

---

Definitions:

DSM-IV TR Criteria

refers to the diagnostic criteria outlined in the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision, an earlier version of the DSM.

High Functioning Autistic

A term often used to describe individuals with autism spectrum disorder who can perform daily tasks independently and have a higher intellectual capacity.

Pervasive Developmental

Refers to a group of disorders characterized by delays in the development of socialization and communication skills, including autism.

Childhood Disintegrative

A rare condition characterized by late onset (usually after at least two years of normal development) of developmental delays in language, social function, and motor skills.