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:

Liquids Evaporate

The process by which liquid substances transform into gas, usually as a result of heating or being exposed to air.

Heat Absorbed

The process of taking in thermal energy, often resulting in a temperature rise of the absorbing substance or mass.

Gas Condenses

The process where a gas changes its phase to a liquid when cooled or when pressure is applied.

Under-Pressure

A condition where pressure in a system, such as in hydraulic or pneumatic, is below the desired or required level, potentially affecting performance.