the flash crossed over with arrow on november 27, 2017.
when does the flash cross over with arrow?
november 27 , 2017
in may 2017, the cw president mark pedowitz officially announced plans for a four-show arrowverse crossover event, crossing over episodes of the television series "supergirl", "the flash", "legends of tomorrow", and "arrow". the crossover, "crisis on earth-x", began with "supergirl" and a special airing of "arrow" on november 27, 2017, and concluded on "the flash" and "legends of tomorrow" on november 28. prior to that, "arrow" actress emily bett rickards appears as felicity smoak in the fifth episode of the season. following the crossover, katie cassidy (who has previously appeared on "the flash" as both laurel lance and black siren) appears in the nineteenth episode as siren-x, an alternate version of laurel from earth-x. "arrow" actor david ramsey appears as john diggle, as well as devoe's diggle disguise earlier in the twenty-second episode.
the flash (season 4)
in animals, corals (phyla cnidaria) and barnacles (subphyla crustacea), androdioecy has evolved from hermaphroditism. many plants self-fertilize, and males may be sustained in a population when inbreeding depression is severe because males guarantee outcrossing.





























section::::androdioecious species.





























despite their unlikely evolution, 115 androdioecious animal and about 50 androdioecious plant species are known. these species include





























section::::androdioecious species.:anthozoa (corals).





























bullet::::- "goniastra australensis"





























bullet::::- "stylophora pistillata"





























section::::androdioecious species.:nematoda (roundworms).





























rhabditidae (order rhabditida)





























bullet::::- "caenorhabditis briggsae"





























bullet::::- "caenorhabditis elegans"





























bullet::::- "caenorhabditis sp. 11"





























bullet::::- "oscheius myriophila"





























bullet::::- "oscheius dolchura"





























bullet::::- "oscheius tipulae"





























bullet::::- "oscheius guentheri"





























bullet::::- "rhabditis rainai"





























bullet::::- "rhabditis sp. (af5)"
androdioecy