You can start the beginning of a essay with the words, 'the, what, our, you and it.' Try not to start you beginning paragraph with words like 'and, but, and because.'
Dear, The, There, Where, When, How Why -- most any word, really.
Any English word may begin a sentence or a paragraph but I believe you mean a starting a paragraph on an essay. Some Ways are, firstly, secondly, thirdly, also, another reason, as well as, however, on the other hand and many more.
Some transition words for the 3rd paragraph could include "in addition," "furthermore," "moreover," or "similarly."
At the beginning of each paragraph (except for the first paragraph if you start with a really big letter like they do in some books.)
FurthermoreMoreoverIn AdditionAlsoFirstlySecondly etcLastlyObviouslyIn ConclusionCOnsequently
A common characteristic of all known elements are the three basic particles common to all atoms.
Some words that start with Y are:yachtyakyamYankyarnyawyawnyeahyearyearnyellowyenyesyesterdayyetyetiyewyipyoyodelyokeyolkyonderyorkyouyoungyoungsteryouthYugoslaviayummy
Some words that start with U are:uglyulcerumbrellaumpireuncleunderunguentupurbanurchinurgenturnuseutility
Some words that start with 'pat' are:patchpatepatentpaternalpaternitypathpathologypathospatiencepatientpatinapatiopatootiepatriarchpatricidepatriotpatrolpatronpatroonpatsypatterpatternpatty
Some words that start and end with A are:acaciaAfricaAlabamaAlbaniaalfalfaAlgeriaalpacaAmericaanemiaammoniaamnesiaamphoraanacondaAndorraAngolaangoraAntarcticaAntiguaappaloosaareaarenaArgentinaariaArmeniaArizonaAsiaaspidistraaquaaromaarugulaauraauroraAustraliaAustria
Some words that start with Y are:yachtyakyamYankyarnyawyawnyeahyearyearnyellowyenyesyesterdayyetyetiyewyipyoyodelyokeyolkyonderyorkyouyoungyoungsteryouthYugoslaviayummy