10 Steps of Photosynthesis Flashcards | Quizlet
Gravity. Step One (Light Reaction) Click card to see definition 👆. Tap card to see definition 👆. Three ingredients are needed: water, sunlight, and carbon dioxide. Water is drawn up from the plant's roots to its stem, carbon dioxide enters through the pores on the leaves of the plant, and sunlight is absorbed to provide energy for the entire process.
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