This is a preview. Log in through your library . Abstract Background and Aims Organisms often balance among reproduction, growth and survival. When these processes are in competition, selection may ...

Add Yahoo as a preferred source to see more of our stories on Google. Unfurling fiddlehead of the Christmas fern (_Polystichum acrostichoides_). Jacob S. Suissa, CC BY-ND Imagine a photograph of your ...

Did you give or receive flowers for St. Valentine’s Day? Though not a flower, your commercial floral arrangement may have included our local native sword fern. Ferns were considered magic for a long ...