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UN climate chief: No doubt world will shift to low emissions

  • A member of Moroccan security stands guard next to flags of participating UN member states, on the entrance to the COP22 village, a day ahead of the opening ceremony, in Marrakesh, Morocco, Sunday, Nov. 6, 2016. The Climate Conference, known as the COP22, starts Monday in Marrakech. (AP Photo/Mosa'ab Elshamy)

    A member of Moroccan security stands guard next to flags of participating UN member states, on the entrance to the COP22 village, a day ahead of the opening ceremony, in Marrakesh, Morocco, Sunday, Nov. 6, 2016. The Climate Conference, known as the COP22, starts Monday in Marrakech. (AP Photo/Mosa'ab Elshamy)  (The Associated Press)

  • U.N. climate chief Patricia Espinosa delivers her speech during the opening session of the Climate Conference in Marrakech, Morocco, Monday Nov. 7, 2016. Climate negotiators have started work on implementing the Paris pact on global warming amid uncertainty over how the U.S. election will impact the landmark deal as temperatures and greenhouse gases soar to new heights. (AP Photo/Mosa'ab Elshamy)

    U.N. climate chief Patricia Espinosa delivers her speech during the opening session of the Climate Conference in Marrakech, Morocco, Monday Nov. 7, 2016. Climate negotiators have started work on implementing the Paris pact on global warming amid uncertainty over how the U.S. election will impact the landmark deal as temperatures and greenhouse gases soar to new heights. (AP Photo/Mosa'ab Elshamy)  (The Associated Press)

  • French Environment Minister Segolene Royal, right, and conference president Salaheddine Mezouar stand by a globe during the opening session of the Climate Conference in Marrakech, Morocco, Monday Nov. 7, 2016. Climate negotiators have started work on implementing the Paris pact on global warming amid uncertainty over how the U.S. election will impact the landmark deal as temperatures and greenhouse gases soar to new heights. (AP Photo/Mosa'ab Elshamy)

    French Environment Minister Segolene Royal, right, and conference president Salaheddine Mezouar stand by a globe during the opening session of the Climate Conference in Marrakech, Morocco, Monday Nov. 7, 2016. Climate negotiators have started work on implementing the Paris pact on global warming amid uncertainty over how the U.S. election will impact the landmark deal as temperatures and greenhouse gases soar to new heights. (AP Photo/Mosa'ab Elshamy)  (The Associated Press)

Climate negotiators have started work on implementing the Paris pact on global warming amid uncertainty over how the U.S. election will impact the landmark deal as temperatures and greenhouse gases soar to new heights.

U.N. climate chief Patricia Espinosa told delegates in rain-soaked Marrakech on Monday that "no politician or citizen, no business manager or investor" can doubt that the world is determined to shift toward a "low-emission, resilient society."

In all, 100 countries have formally joined the agreement adopted last year in Paris, including top polluters China, the United States, the European Union and India.

However, U.S. Republican presidential candidate Donald Trump has said he would "cancel" the deal if he wins the election this week. His opponent, Hillary Clinton, backs the climate policies of President Barack Obama's government.