Identify each of the parentheses items as an independent or dependent variable.
1)The (number of red blood cells )independent in a mouse's blood at(different levels of iron) dependent in its diet.
20)The (amount of starch formed)dependent in a plant leaf for (different times)independent of exposure to light.
1)
You change the independent variable (diet)
and
observe the dependent variable (blood cells)
20) agree
http://www.sciencebuddies.org/science-fair-projects/project_variables.shtml
1) The number of red blood cells is the dependent variable, as it depends on the different levels of iron in the mouse's diet. The different levels of iron would be the independent variable.
20) The amount of starch formed is the dependent variable, as it depends on the different times of exposure to light. The different times of exposure to light would be the independent variable.
To identify the independent and dependent variables in a given set of parentheses, we need to understand the nature of these variables.
1) In the first parentheses: "The number of red blood cells" - This is the dependent variable as it is the outcome that is being measured or observed based on the changes in the independent variable.
In the second parentheses: "Different levels of iron" - This is the independent variable as it is the factor that is manipulated or changed to observe its effect on the dependent variable.
20) In the first parentheses: "The amount of starch formed" - This is the dependent variable as it is the outcome being measured or observed.
In the second parentheses: "Different times" - This is the independent variable as it represents the factor that is being manipulated or controlled to observe its impact on the dependent variable.
To summarize:
1) Dependent variable: The number of red blood cells
Independent variable: Different levels of iron
20) Dependent variable: The amount of starch formed
Independent variable: Different times