Why Are Most Food Chains Limited to Three to Five

question 57

Multiple Choice

Why are most food chains limited to three to five trophic levels?

• A)The higher the trophic level, the larger the organism; the larger the organism, the less likely it will be prey.
• B)The nutritional quality of existing biomass decreases with increasing trophic level.
• C)Most ecosystems have insufficient space to support the increased number of organisms that more trophic levels would require.
• D)There is insufficient energy to support more trophic levels.

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Definitions:

Manic Symptoms

Symptoms characterized by an abnormally elevated or irritable mood, increased energy or activity levels, and other extreme changes in behavior or thought patterns, seen in bipolar disorder.

Mood Disorders

A category of psychiatric conditions related to persistent disturbances in a person's mood, altering their emotional state.

Suicidality

The risk or propensity for attempting or contemplating suicide.

Buproprion

A medication used primarily as an antidepressant and for smoking cessation, affecting dopamine and norepinephrine levels in the brain.