What is the darkest section of the moon’s shadow during a solar eclipse?

Mario performed an experiment to determine if photosynthesis was affected by the amount of light that a plant received. what could he have done to increase the validity of his data? reduce the number of plants. remove the 1 hour group. add a 0 hours control. measure the oxygen in liters

To be or not to be that is da question

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes