Explain the processes that take place in the stroma including the reactants going in and the products produced from these processes in (a) bright sunlight and in (b) darkness. (c) what happens over extended period of darkness of many days?

The stroma is found in the chloroplast. it surrounds the grana, the grana is where photosynthesis takes place. The dependent that depends on light capture the energy,from the light,and then uses this to create ATP in the 2nd stage, then uses the product to reduce carbon.

Its either a) or b),wind and water erosion gradually widen the canyon

If there were no memes, there would be no life.