Question

1. you are interested in investigating photosensitivity in earthworms. you come up with the testable question “how does intensity of light affect earthworm response?”

a. what is your independent variable? ______________
b. what is your dependent variable? ______________
c. how could you measure earthworm response? in other words, what data are you collecting?

Explanation:

Step1: Identify independent variable

The variable that is changed or controlled in an experiment. Here, it's the light intensity being manipulated to see its effect on earthworms.

Step2: Identify dependent variable

The variable that is being measured or observed. It depends on the independent variable. Here, it's the earthworm response.

Step3: Determine data - collection for response

Possible ways to measure earthworm response could be movement patterns, time spent in light/dark areas etc.

Answer:

a. Intensity of light
b. Earthworm response
c. Movement patterns, time spent in light/dark areas (or other relevant behavioral measures)