
(a)
To determine: The dependent and independent variable of the given experiment.
Introduction: The independent variable is that which changes with time. The dependent variable is that which always depends on the independent variable. Both variables work accordingly in a controlled manner.
(b)
To determine: The control used in the experiment.
Introduction: In this experiment, baby guppies are given vitamin D deficient food, and their growth is measured on every third day continuously for three weeks.
(c)
To determine: The graph with a legend according to the data provided in the table.
Introduction: The dependent and independent variables are used in the experiment in the form of average body length of the fish and the period used to measure the average length.
(d)
To determine: The time during which growth is the slowest and the fastest.
Introduction: The average body length of the guppies increases with the passage of the time. It can be deducted with the help of a graph.

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Chapter 1 Solutions
EBK HUMAN PHYSIOLOGY
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