During the 1960s,a Group of Scientists in the Northeastern United

question 7

Multiple Choice

During the 1960s,a group of scientists in the northeastern United States conducted an experiment at Hubbard Brook,New Hampshire.A 38-acre watershed was completely deforested and the runoff (water flow) monitored for several years.It was compared to an adjacent watershed that was left untouched.The scientists collected data during those years and found that

• A)there was no difference in the amount of runoff from the two areas.
• B)there was a difference but it was not significant,and there was less nitrogen in the runoff from Hubbard Brook than at the control site.
• C)there was a tremendous increase in the total amount of runoff but the nitrogen levels were fairly constant in both areas.
• D)there was a tremendous increase in the amount of runoff and the nitrogen levels in the runoff were huge compared with the control.
• E)there was a tremendous increase in the amount of runoff but the vegetation was able to reestablish itself very quickly and the runoff soon returned to its normal level.

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Definitions:

Induration

The process of becoming hard or the condition of being hardened, often referring to an area of the skin that becomes firm from inflammation, edema, or malignant growth.

Abdominal Bandage

An abdominal bandage is a bandage or wrap designed to support the abdomen after surgery, injury, or for any other medical reason requiring additional abdominal support.

Circulatory Impairment

A condition where the blood flow through the body's circulatory system is blocked or reduced, affecting the body's ability to deliver oxygen and nutrients to tissues.

Hydrogen Peroxide

A chemical substance known as H2O2 that serves as an oxidizing agent, a bleaching substance, and a disinfectant.