weeks

The calendar we use today is basically the Julian calendar – introduced in 45 BC by Julius Caesar. In 1582 Pope Gregory XIII made only a minor amendment to this calendar concerning leap years in order to prevent the calendar from lagging behind the solar year by 1 day in every 128 years – minimising this error to 1 day in every 3322 years. When it was first created, there were only two versions of...

The reproductive success of entomophilous species depends on the floral attractivity and mating system of plants, and the performance of pollinators. Owing to the substancial declie in the number of honey bees, the significance of wild insects as pollen vectors is growing. Lack of the comparative studies on ecological specialization of the floral display in cultivated mustards and effectiveness of...