A Trench in the Open Ocean Is 15,000 Feet Deep

question 190

Multiple Choice

A trench in the open ocean is 15,000 feet deep.It contains a thriving, diverse ecosystem of living organisms.This ecosystem is most likely possible because

• A) very clear water allows light to penetrate and photosynthesis to occur.
• B) a hydrothermal vent provides heat, and the heat stimulates photosynthesis.
• C) a hydrothermal vent provides nutrients that are used by chemoautotrophic prokaryotes.
• D) in some areas of the deep ocean, water pressure is much less, making life possible.
• E) in some areas of the deep ocean, waves stir up nutrients that support the life.

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Definitions:

Smoothing Constants

Parameters used in exponential smoothing models to control the rate at which past observations are decayed or discounted.

Regression Equation

A mathematical formula that describes the relationship between one dependent variable and one or more independent variables, typically used for prediction or forecasting.

R-Square

A statistical measure that represents the proportion of the variance for a dependent variable that's explained by an independent variable or variables in a regression model.

Regression Line

A statistical tool represented as a line on a graph that best fits the data points, showing the relationship between two variables.