This is my answer for the question posted on the blog by my teacher. Check my grammar, thank you!! Climate Strike has been drawn much attention since the human activities influences the environment, and could lead to the change of climate. For example, deforestation is the second leading cause of global warming and produces about 24% of global greenhouse gas emissions; the increasing use of vehicles lead to the rise of greenhouse petroleum emissions. As for the collective action I witnessed last Friday, I think the action is just a propaganda, which appealed people to protect our environment. Some of the participants made the posters to reflect the environmental problem which relates to climate change during the activity. However, I don’t think this kind of collective action (Climate Strike Rally) could save the world because not everyone who saw this action would fight against the people who damage the environment. Some people may still do something which could lead to environmental degradation and climate change for their profit. For example, logger need to cut down the trees to get money.The essential cause of climate change is human activities, if people continue to do something which could lead to increasing greenhouse emission, the wold would never be saved. Although we could have cutting-edge technology which is used to deal with environmental problems, those environmental problems are hard to be uprooted as long as people are still making bad impact on the environment. If everyone could make contribution to environmental protection by picking up a piece of paper, recycling, and taking public transportation, at least our living condition could be improved. While saving the world is not a easy task, collective action is only one part of saving the world. I think the most helpful thing I can do is learning environmental science, and exploring the best way to deal with climate change and other environmental problems in the future. I hope when I grow up, I can devote myself to solving more environmental problems. I think joining the Global Climate Strike movement is a good beginning for me to protect the environment, I am ready to help the movement anytime.