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Arnold Schwarzenegger is arguing that U.S. President Donald Trump’s rejection of the Paris climate accord doesn’t matter, because companies, scientists and other governments can “pick up the slack” to reduce global emissions.

READ MORE: Arnold Schwarzenegger has a message for Donald Trump and white supremacists

The Hollywood star and former California governor took a spin on a Parisian electric bike Monday as part of events leading up to an international climate summit Tuesday hosted by French President Emmanuel Macron.

Schwarzenegger said “Donald Trump pulled Donald Trump out of the Paris agreement,” but many in the private sector, cities and state governments, engineers and universities remain committed to fighting climate change.

READ MORE: Schwarzenegger has ‘wonderful’ climate change discussion with Macron in Paris

A prominent environmental campaigner, Schwarzenegger acknowledged that many people “don’t understand what global warming or climate change really means,” and urged environmental activists to focus on efforts to fight pollution instead because of its health risks.

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WATCH: Activists put on a performance that symbolized a massive wave of oil on Tuesday, in a protest at the start of an international climate summit in Paris.

1:31 Hundreds protest outside international climate change summit in Paris Hundreds protest outside international climate change summit in Paris