关于植树节的英文文章

in the years following that first arbor day, morton's idea spread beyond nebraska with kansas, tennessee, minnesota and ohio all proclaiming their。 own arbor days. today all 50 states celebrate arbor day although the dates may vary in keeping with the local climate. (state arbor days) at the federal level, in 1970, president richard nixon proclaimed the last friday in april as national arbor day. arbor day is also now celebrat