In a Particular Case of Secondary Succession, Three Species of Wild

question 36

Multiple Choice

In a particular case of secondary succession, three species of wild grass all invaded a field. By the second season, a single species dominated the field. A possible factor in this secondary succession was

• A) equilibrium.
• B) facilitation.
• C) immigration.
• D) inhibition.
• E) parasitism.

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Definitions:

Diffusion

The process by which molecules move from an area of higher concentration to an area of lower concentration until equilibrium is reached.

Synaptic Vesicles

Membrane-bound structures within presynaptic neurons that contain neurotransmitters, which are released into the synaptic gap in response to a neuron's action potential.

Attractive Forces

Forces that cause particles or objects to come together, commonly found in physics and chemistry, such as gravitational or electromagnetic forces.

Endorphins

Neurochemicals produced by the body that act as natural painkillers and are associated with feelings of pleasure and euphoria.