No water has been discovered on either planet yet.
One year. It takes 365 days for Earth to orbit the sun.
This implies that the gametophytes can easily lose water to, and absorb water from, the atmosphere.
Moss is a flowerless, spore-producing pant. The main moss structure is the gametophyte, a moss's stem and leaves. A moss stem also the axis supports leaf-like structures that carry out photosynthesis, transforming sunlight into sugars the moss uses for food.
Answer:
Oxygen is used to break down sugar and sugars release energy
