HELP ASAP PLS What is the

independent variable?

Dependent variable?

Identify the constants.
Check all that apply.
-coffee grounds
-water amount
-soil
-plant type
-sunlight
-plant height

I want to set up an experiment to test how coffee affects plant growth. Both plants will have the same potting soil, sunlight, plant species, sunlight exposure, and amount of water each day. One plant I will give 100mL of water 3 times a week. The other plant will receive 100mL of water with coffee grounds 3 times a week. I will measure the plant growth every 2 weeks.