Please help me determine this

The seed coat's most important function is to provide a) a nonstressful environment for the megasporangium. b) the means for dispersal. c) dormancy. d) a nutrient supply for the embryo. e) desiccation resistance.

Does masterbation affect height growth or loss of growth hormone?

What is the membrane that sheath of schwann cell containing cytoplasm and nucleus that encloses myelin