31At Each Level in a Food Chain or Food Web,energy

question 40

Multiple Choice

31.At each level in a food chain or food web,energy is lost through:

• A)decay
• B)respiration
• C)metabolism
• D)net photosynthesis
• E)gross photosynthesis

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Definitions:

Biological Clock

An innate mechanism that controls the physiological activities of an organism, such as sleep cycles, puberty, and aging.

Hypothalamus

A small but crucial part of the brain located below the thalamus, responsible for regulating many bodily functions including hunger, thirst, sleep, and emotions.

SAD

Seasonal Affective Disorder, a type of depression that occurs at a certain time of the year, usually in winter.

Depression

A common and serious medical illness that negatively affects how you feel, the way you think, and how you act, causing feelings of sadness or a loss of interest in activities once enjoyed.