Question

more experimental design practice
one grape is placed in tap water and another grape is placed in salt water. the change in their mass is measured after a day.
the independent variable is
the dependent variable is

Explanation:

The independent variable is the factor manipulated in an experiment. Here, the type of water (tap vs. salt) is changed. The dependent variable is what is measured; here, it’s the change in mass of the grapes, which depends on the water type.

Answer:

The independent variable is the type of water (tap water vs. salt water)
The dependent variable is the change in mass of the grapes