What Unique Problem Is Related to Photodegradation of Plastics

question 66

Multiple Choice

What unique problem is related to photodegradation of plastics?

• A)They break down into highly toxic chemicals.
• B)Photodegradation of plastics is the cause of coral bleaching
• C)Plastics break down, but into tiny bits that persist for an indefinite period.
• D)Fish starve when they feed on degraded plastics.

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Definitions:

Scan Time

The time required to read all inputs, execute the control program, and update local and remote input and output statuses. Scan time is, in effect, the time required to activate an output controlled by programmed logic.

Input Module

A component of a PLC or control system responsible for receiving and processing signals from external devices or sensors.

Cross-Reference Function

A feature in software or documentation that allows users to follow references to other parts of the document or dataset.