In the Case of the Hubbard Brook Experimental Forest,hydrogen Ion

question 47

Multiple Choice

In the case of the Hubbard Brook Experimental Forest,hydrogen ion concentration in precipitation was measured over a period of more than 40 years.Why was it important to track the concentration of hydrogen ions in precipitation over such a period of time? Why not use just a few years?

• A) Tracking these data over more than 40 years was important because there was so little variation between years
• B) The period of time was necessary to capture beginning and final concentrations only. The researchers were not interested in data in between these points
• C) Measuring these data over more than a few years allowed researchers to track the trend in hydrogen concentration through time
• D) Collecting data for a few years would have been misleading because of the year by year variation