Living Environment - January 2011

 

Part B–2

Base your answers to questions 46 through 50 on the data table below and on your
knowledge of biology. The data table shows the concentrations of oxygen in parts per
million (ppm) present in freshwater and seawater at various temperatures.

Directions (46–48): Using the information in the data table, construct a line graph on
the grid on the next page, following the directions below.

46 Mark an appropriate scale on each labeled axis. [1]

47 Plot the data for freshwater oxygen concentration on the grid. Surround each point
with a small circle and connect the points. [1]

48 Plot the data for seawater oxygen concentration on the grid. Surround each point with a small triangle and connect the points. [1]

49 Predict the oxygen concentration in freshwater at 35C. [1]
__________ ppm

50 State one relationship between temperature and dissolved oxygen concentration in
water. [1] 

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