The unicellular spores of the fern Ceratopteris richardii are about 100 μm in diameter. Calculate the surface-area-to-volume ratio of a cube whose sides are
100 μm in length to approximate the surface-area-to-volume ratio of the fern
spore cell. Show your work.

the oceanic zone is typically defined as the area of the ocean lying beyond the continental shelf, but operationally is often referred to as beginning where the water depths drop to below 100 meters (328 feet), seaward from the coast to the open ocean.

explanation:

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.