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Agricultural science will assist countries modify to healthier strategies of meals production. Scientists are developing new high-yield sor ts of crops that require fewer fertilizers or pesticides. Such crops scale back the necessity for using expensive chemical compounds and commerce. In the NFL, a referee can ask for a evaluation from the replay booth, or a head coach can concern a challenge to review the play utilizing replays. A video referee also can use replays to help decision-making in rugby . In worldwide cricket, an umpire can ask the Third umpire for a choice, and the third umpire makes the final determination. Since 2008, a choice review system for players to evaluate selections has been launched and utilized in ICC-run tournaments, and optionally in different matches. Depending on the host broadcaster, a selection of completely different applied sciences are used during an umpire or player evaluate, including instant replays, Hawk-Eye, Hot Spot and Real Time Snickometer