What is a scientific hypothesis? in what two ways can a hypothesis be tested?

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 type of cell is produced after fertilization occurs and the gametes combines ?

Resperation is a way to release carbon back into the atmosphere