Match the Items with the Correct Description Below

question 20

Multiple Choice

Match the items with the correct description below.
-Total-etch system

• A)An attribute that allows a material to tolerate the presence of moisture
• B)A bonding system that does not use a separate etching procedure with phosphoric acid
• C)A resin/dentin layer formed by the intermixing of the dentin bonding agent with collagen fibrils exposed by acid etching
• D)An attribute that does not allow a material to tolerate or perform well in the presence of moisture
• E)A bonding system that includes etching of both enamel and dentin as a separate step from the application of bonding agents

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Definitions:

Primary Productivity

The rate at which plants and other photosynthetic organisms produce organic compounds (such as carbohydrates) from carbon dioxide and water in the presence of sunlight, which serves as the basis for most food chains.

Photic

Pertaining to the upper layer of a body of water that is illuminated by sunlight, allowing photosynthesis to occur and supporting the majority of aquatic life.

Epipelagic

Relating to the upper layer of the ocean, from the surface to about 200 meters deep, where there is enough sunlight for photosynthesis.

Thermal Stratification

The layering of water in a lake or ocean, based on temperature variations with depth, which can affect aquatic life and water quality.