Light years is a measure of distance, not of time; it is the distance that light travels in one year.
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One light year is the distance light travels in one Earth year. So, 70,000 light years would be equivalent to 70,000 Earth years.
420,000 trillion (6,000,000,000,000 x 70,000).
The light dependent reactions take in the light energy and convert that to chemical energy, but it is in the Calvin cycle (light independent reactions) where the chemical energy is stored in a complex sugar.
Chloroplasts convert light energy to food during photosynthesis in plants.
Chloroplasts convert light energy to food during photosynthesis in plants.
Chloroplast convert light energy. Mitochondria convert chemical energy itself