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.
If by largest you mean greatest biomass then it would have to be the round worms phylum Nematoda if you mean the greatest number of species then it would have to be anthropoda as it includes the insects. If you mean by size then it would have to Chordata as it includes the whales.