Answer :
It's gives it the ability to breath and make more leaves all year round all though there's no sun light on space you can grow grass on the moon cos of its moist surface and due to photosynthesis even if there's no water the leaves will grow again next year but then again I ain't no scientist I'm a stock broker so u no .....
leaves contain chlorophyll, a green pigment capable of absorbing light energy. This can then be used to make sugar out of CO2 in the atmosphere, ie from the air. This is stored as starch or used as energy/glucose. The equation for this is as follows: Carbon dioxide + water + light energy ----> glucose + oxygen