Convert time to seconds in Excel. Converting time to total seconds is done in the same fashion-you multiply the time value by 86400, which is the number of seconds in a day (24 hours * 60 minutes * 60 seconds = 86400):
Nematoda (nematodes, eelworms, threadworms, roundworms; phylum Aschelminthes) Class of aschelminth worms (a phylum in some classifications) which vary greatly in size, from about 1 mm to 5 cm. The cuticle has flanges, and may also have ridges or spines.
Most Nematodes are free-living, but some are important parasites of plants and animals. As for the flatworms, nematode development includes all three embryonic tissue layers. Roundworms have a fluid-filled body cavity, that is lined on the outside by tissue derived from mesoderm. Members of this phylum may be most familiar: the common earthworm, leech and nightcrawler belong to this group. There are three general types of segmented worms. One group is entirely marine (the polychaetes), while the other two groups are either terrestrial or live in freshwater.