Please help me with this it’s so hard

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

What types of energy transfers and energy transportations are involved in the domino chain reaction?

Look at the photo of the leaf. which term best describes this leaf?