Question

marcella has read an article on the internet that says plants grow better in acidic soil. she decides to test this statement by adding 15 milliliters of vinegar to the 0.5 l water container she uses to water one row of her marigolds. on the other row, she waters her marigolds with regular water from a 0.5 l container. she measures her marigold’s height each week for six weeks. 2. the dependent variable: a) the height of the marigolds b) the amount of water used on the plants c) the presence of vinegar in the water d) the length of time the marigolds are measured

Explanation:

A dependent variable is what is being measured and affected during an experiment. Here, Marcella measures the height of marigolds, which is expected to be affected by the presence of vinegar in the water. The other options are either independent variables (like presence of vinegar) or constants (amount of water, length of measurement time).

Answer:

a) the height of the marigolds