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Chemistry, 16.06.2021 20:30 MilanPatel

As part of a study on factors that influence respiration rate, a scientist sets up an experiment to see whether external water temperature is related to the rate of respiration in fish. She performs the test on 10 goldfish at four temperatures.
The scientist counts the number of gill movements for each fish at each temperature for 1 minute. The rate of oxygen
intake can be indirectly measured by observing the rate at which the gill flap opens and closes. Afterward, she averages
the data for each temperature and creates the following graph.
colc
Effect of Temperature
on Respiration Rate in Fish
OF
.doc
120
100
80
Mean Number of
Gill Movements
60
haJP
40
20
0
10°C
16°C
21°C
27°C
Water Temperature
Which is the independent variable and which is the dependent variable in this experiment?
OA.
The independent variable is the respiration rate; the dependent variable is the temperature.
JPG
ОВ.
The independent variable is the temperature; the dependent variable is the respiration rate.
OC.
The independent variable is the number of goldfish; the dependent variable is the temperature.
OD
The independent variable is the respiration rate; the dependent variable is the number of goldfish.
Hlus
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