What's the difference between "take action" and "take an action"? No difference? I feel I've seen or heard "take an action" more.
go2-10lesson-1p ex) Global warming is one of the most serious challenges facing us today. The glaciers are melting faster, our sea levels are rising, and weather patterns are unexpectedly changing. However, the good news is that each of us can take action to solve this crisis. All of us have a role to play, and none of us bear the burden alone. The positive effects of small actions, multiplied by millions of people, can lead to dramatic effects.
Thanks a lot!!!