Due to divergent evolution, some species may have similar anatomical structures with the same purposes. The species while not exactly similar are close enough to allow the interbreeding of the two, such as the horse and mule
If we put a plastic bag over a branch of a tree, it should fill with the water vapor that the tree is releasing. If there is enough water vapor in the bag, it will condense into the liquid form of water, and we will be able to see it.
