Question

In an investigation of the effect of light on a plant's production of oxygen bubbles, one

experiment was conducted four times. Each time, four bottles of water with a sprig of a water
plant were placed at different distances from a light source. How many trials did this
investigation have?

Answer 1

The investigation had four trials, with each experiment counting as a trial.

Step-by-step explanation:

This investigation had four trials. The student conducted the experiment four times, placing four bottles of water with a sprig of a water plant at different distances from a light source each time. Each experiment counts as a trial, so there were a total of four trials in this investigation.