Question

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.

Answer 1

1)
You change the independent variable (diet)
and
observe the dependent variable (blood cells)

20) agree

Answer 2

http://www.sciencebuddies.org/science-fair-projects/project_variables.shtml