Answer:<u><em>nonvascular</em></u>
a plant that has flowers and produces seeds enclosed within a carpel. The angiosperms are a large group and include herbaceous plants, shrubs, grasses, and most trees.
Depending on the size of the rock it comes from, yes and no. The smaller the rock, the smaller the crystals and vice versa.
I think it is D. The National Institutes of Health found it effective in reducing pain and other symptoms, but it is not clear how it works.