Even Though the Autumn May Be Unusually Warm, the Leaves

question 12

Multiple Choice

Even though the autumn may be unusually warm, the leaves from deciduous trees begin to drop during September.Which of the following is the best explanation?

• A) The trees are responding to shorter days.
• B) The autumn months are usually drier because the summer rains have tapered off.
• C) The effects of phototropism are operating "right on schedule."
• D) There is not enough sunlight to carry on photosynthesis any longer.
• E) None of these are the best explanation.

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Definitions:

Psychological Effects

The emotional or mental impact resulting from specific events, situations, or stimuli.

Psychological Dependence

A condition in which an individual feels a compelling emotional need to continue using a substance.

Physical Dependence

A physiological state of adaptation to a substance, characterized by the onset of withdrawal symptoms when the substance is reduced or discontinued.

Psychoactive Drugs

Substances that affect the mind, altering mood, perception, or consciousness when ingested or otherwise introduced into the body.