In a Certain Ecosystem, Field Mice Are Preyed on by Snakes

question 1

Multiple Choice

In a certain ecosystem, field mice are preyed on by snakes and hawks. The entry of wild dogs into the system adds a third mouse predator. The most likely short-term result of this addition is

• A) an increase in the snake population.
• B) a tendency for hawks to prey on the dogs.
• C) a reduction in numbers of mice.
• D) migration of the hawks to another ecosystem.

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Definitions:

Dreaming

A collection of mental images, ideas, and emotional experiences that happen during sleep.

Brain Waves

The rhythmic or repetitive patterns of neural activity in the brain, measurable by electroencephalography (EEG).

Frequency

The number of times an event occurs within a specified period of time; in physics, it is the number of waves that pass a fixed point per unit of time.

Amplitude

The height or strength of a wave signal, which in the context of sound, relates to its loudness, and in light, its intensity.