Passage III
A pesticide applied one time to orchards located near Site 1 (see Figure 1) a t the end of January was detected shortly afterward in the waters of an adjacent river system and bay. Figure 2 shows the data collected daily in February at Site 1: the pesticide concentration in the river water, in nanograms per liter (ng/L); the inches of rain that fell in the area during several storms; and the river discharge (in ft3/ sec). Discharge is the volume of water passing a given point in a given amount of time. Figure 3 shows pesticide concentrations for February 4 through February 25 at the 3 sites shown in Figure 1.
15. Which of the following figures best represents the pesticide concentrations measured at the 3 sites on February 13 ?
Your Answer is
Correct Answer is A
Explanation
Look at figure 3, when the abscissa is 13, the ordinates corresponding to site 1 & 2 & 3 are about 180, 275 and 37 respectively