Note taking ... oh, she remembered the reason why she opened her bag in the first place. She took out her notebook and pencil and wrote the date on top of a blank page. Placing the writing materials down on her lap, she raised her hand to answer the question.

"A plant needs light to survive. Specifically, wavelengths of light that correspond to the colours blue and red are the most effective for photosynthesis." She had more to say, but the professor said only one answer each, so she scribbled down everything she could remember in her notes instead.