Some Aquatic Invertebrates Such as Insects and Snails Feed on Biofilms

question 59

Multiple Choice

Some aquatic invertebrates such as insects and snails feed on biofilms. Scientists that study metal-contaminated streams have documented that some biofilms in stream environments absorb zinc from stream water during daylight hours and release the zinc into the stream during the night. What might the scientists hypothesize about zinc concentration in the stream?

• A)The highest zinc concentrations in stream water might occur only during the day.
• B)The highest zinc concentrations in stream water might occur only at night.
• C)Zinc concentrations in stream water are likely to be similar during the day and at night.

Recognize the signs of work-related and personal stressors.

Identify the relationship between stress and physical health.

Understand various evaluation measures for training programs.

Distinguish between affective and utility reaction measures in training evaluations.

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Definitions:

Lost Several Pounds

A phrase typically referring to weight loss, often as a result of diet, exercise, or changes in lifestyle.

Ghrelin

A hormone produced by the stomach that stimulates hunger and increases food intake.

Hunger-Arousing

Refers to stimuli or circumstances that trigger the biological and psychological state of feeling the need to eat.

Secreted by the Stomach

Refers to substances like acids, enzymes, or hormones produced and released by the stomach to aid in digestion and other bodily functions.