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Two Technicians Are Discussing Climate Control Systems

question 22

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Two technicians are discussing climate control systems. Technician A says climate control can be a straight heater system or a combination of heat and air conditioning. Technician B says the heater system depends on the engine and its thermostat for operation. Who is correct?


Definitions:

Coevolutionary Alteration

A change that occurs in the genetic composition of one species (or multiple species) in response to a genetic change in another, reflecting a coevolutionary relationship.

Speciation

Speciation is the evolutionary process by which new species arise. Speciation causes one evolutionary lineage to split into two or more lineages (cladogenesis).

Joshua Trees

A type of yucca plant native to the southwestern United States, characterized by its unique, spiky appearance and adapted to desert climates.

Endogenous Retroviruses

Viral sequences that have integrated into the genome of a host organism and can be inherited across generations.

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