The Primary Producers in Hydrothermal Vent Communities Are

question 87

Multiple Choice

The primary producers in hydrothermal vent communities are:

• A)phytoplankton.
• B)sulfur bacteria.
• C)zooplankton.
• D)kelp.
• E)coral.

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Definitions:

Maintenance Cost

The expenses incurred to keep machinery, equipment, or buildings in operating condition and repair.

Machine-hours

An indicator of the duration for which equipment is utilized in the manufacturing process, commonly employed for distributing manufacturing overhead costs.

Contribution Margin

The amount remaining from sales revenue after variable expenses are deducted, indicating the potential profitability of products.

Net Operating Income

A measure of a company's profitability from its core business operations, excluding non-operating income and expenses.