The answer is D. The digestive system provides energy to your muscular system by breaking down foods and using those nutrients to create energy. It is like how when you are starving, you feel weak because you don't have energy. When you eat something you get more energy so you can move
the breakdown of chlorophyll reveals the carotenoid pigments of a leaf.
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The purity of the wavelength of a visual stimulus determines the perceived saturation, or richness, of the stimulus. Wavelength is the distance from the peak of one wave to the next. Stimulus is a change in the environment and the reaction of the organism to it is the response.
It’s carbon dioxide + water > glucose + oxygen + water and energy produced in the form of ATP