Why does photosynthesis matter? ! im giving you 35 points if you explain in detail

imagine that you live in a very crowded city. the buildings are very close together and there is little room on the street for trees and plants. there are many, many cars in this city.

as you go about your daily routine you often feel tired and run down or even short of breath.

because there is not a lot of room in the city for vegetation, plants, many of the residents have started planting gardens on their roof tops or in plant boxes outside their windows.

using your knowledge of photosynthesis, explain why you might feel tired and short of breath in this city. also using your knowledge of photosynthesis, explain how, if enough of these rooftop and window gardens are planted, your health and the general air quality of the city might improve.