Earth Day Network's mission is to diversify, educate and activate the environmental movement worldwide. More (16) _______ 1 billion people now participate in Earth Day activities (17) ________ year. This can make it the largest observance in the world.

The first Earth Day (18) ____________ April 22, 1970, activated 20 million Americans from all walks of life and is widely credited with launching the modern environmental movement. The passage of the landmark Clean Air Act, Clean Water Act, Endangered Species Act and many other ground-breaking environmental laws soon followed. Twenty years (19) _________, Earth Day went global, mobilizing 200 million people in 141 countries and lifting environmental issues onto the world stage. Now, this day is becoming (20) _________ and more popular all over the world.

More (16) _______ 1 billion people now participate in Earth Day