Question

question: how much light intensity is needed to have a high rate of photosynthesis?

1. look at your results. you tested three intensities of light. does the intensity of light photosynthesis?

Explanation:

Step1: Analyze the relationship between light intensity and oxygen levels

As light intensity increases from 0W (trial 1) to 25W (trial 2), oxygen levels increase from 0mL/hour to 25mL/hour. When light intensity further increases to 75W (trial 3), oxygen levels increase to 75mL/hour.

Step2: Compare with the control

The control has a light intensity of 50W and an oxygen level of 31.3mL/hour. From the trend in the experiment (as light intensity increases, oxygen - related to photosynthesis - generally increases), a relatively high light intensity (like 75W in this experiment, but it may vary depending on the full - range of tested intensities. If we assume these are the only tested intensities, 75W shows a higher oxygen level compared to lower intensities in the experiment) is associated with a higher rate of photosynthesis (as oxygen is a by - product of photosynthesis).

Answer:

Based on the given data (assuming no other light intensities are tested beyond 0, 25, 50, 75W), a light intensity of 75W (in this experiment) shows a relatively high rate of photosynthesis (as indicated by higher oxygen levels compared to lower intensities in the tested set).