The oxygen released into the air as a product of photosynthesis comes from

The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind

Why does miranda have that particular vision of dr hildesheim answer?

What material did the moon come from?