Scientific Investigation of the Exact Effects of Environmental Steroids on Humans

question 21

Multiple Choice

Scientific investigation of the exact effects of environmental steroids on humans is extremely difficult since there are multiple sources of hormones in the environment. A valid study would require a control group that has not been exposed to the chemicals being studied. Since everyone has had some exposure to environmental hormones, no control group is available to use as a reference.
Another way to assess the environmental hazard due to steroid hormones is to analyze the amount of residual hormones present following commercial water treatment by water treatment plants.
-Which situation would make researchers suspect that there was an excess of steroid hormones in the environment?

• A) an increase in foot fungal infections
• B) an increase in mutation rate in amphibians in the area
• C) premature puberty in girls in the area
• D) an increase in bone fractures in seniors in the area

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Definitions:

Net Income

The total profit of a company after all expenses and taxes have been subtracted from revenues.

ROCE

Return on Capital Employed; an economic metric that evaluates how effectively a firm uses its capital to generate profits.

Variable Costs

Expenses that shift in direct proportion to the amount of production or sales, like labor and materials.

Fixed Costs

Costs that remain consistent for a company irrespective of how much goods or services it produces.