What is the difference between b-cell lymphocytes and t-cell lymphocytes?

An example of what is geese flying south for the

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.

Which is an example of a decomposer? a. bear b.algae c.grass d.bacteria d bacteria