​The Introduction of Electronics into Welding Machines Has Given Welders

question 6

Multiple Choice

​The introduction of electronics into welding machines has given welders ______________.

• A) ​more control over welding parameters
• B) ​the ability to make any weld in any material
• C) ​the ability to communicate with other welders over the web
• D) ​the ability to make welds without shielding gas

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Definitions:

Monophyletic Group

An ancestor in which a derived trait evolved, together with all of its descendants.

Derived Trait

A character that is present in a clade under consideration, but not in any of the clade’s ancestors.

Stabilizing Selection

A type of natural selection that favors intermediate variants by acting against extreme phenotypes, leading to a decrease in a population's genetic variance.

Clutch Size

The number of eggs laid or offspring produced by an animal, particularly birds, at one time or during one breeding session.