22 April is observed every year internationally as? A) Environment Day B) Food Day C) Press Freedom Day D) Earth Day Related MCQs: 22 March is observed internationally as: March 22 is observed internationally as: The first earth day was observed on April 22 in the year? A manufacturer of TV sets produced 600 units in the third year and 700 units in the seventh year. Assuming that the production increases uniformly by a fixed number every year, find the production in the last year.