A Scientist Observes That When She Opens the Back Door

question 11

Multiple Choice

A scientist observes that when she opens the back door of her house to let her cat out, the songs of a certain species of bird abruptly change.She wants to follow up on her observations with an informal experiment.Which of the following is the best hypothesis for explaining the birds' song changes?

• A)The bird species switches from song to warning call whenever it sees a potential predator.
• B)The bird species has a variety of songs that it sings, regardless of what is happening in its environment.
• C)The scientist is mistaken and the songs do not change.

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Definitions:

Camelback

A design feature in some types of suspension systems or vehicle chassis, characterized by a humped shape to allow for greater flexibility or weight distribution.

Solid Rubber Block

A dense piece of rubber material used for various applications, including vibration damping and support structures.

Rubber-bushed Equalizing Beams

Suspension components used in heavy vehicles, featuring rubber bushings for increased flexibility and wear resistance, helping to distribute load evenly.

Torque Rods

Components in a vehicle's suspension system that helps to control axle movement and alignment, reducing stress on other parts.