Question

four groups of corn are given different types of natural fertilizer: fish emulsion, worm castings, cow manure compost, and no fertilizer. the height of the corn is measured each week. type of fertilizer choose choose constant dependent variable independent variable height of corn type of soil

Explanation:

• Type of fertilizer: It is something the researcher changes (different types given to different groups), so it is the independent variable.
• Height of corn: It is what is being measured and depends on the type of fertilizer, so it is the dependent variable.
• Type of soil: It should be kept the same (assuming a well - controlled experiment) for all groups, so it is a constant.

Answer:

Type of fertilizer: Independent Variable
Height of corn: Dependent variable
Type of soil: Constant