Sample Answer:

　　It is true that our tiny individual actions often seem insignificant compared to the scale and complexity of global environmental problems such as pollution, deforestation and depletion of natural resources. But that does not relieve our duty as individuals to do as much as we can to deal with these problems。

　　Individual actions, small as they may be, can prove more effective than we realize. We can avoid driving the car, and take public transit, walk, or bicycle instead. This will reduce the use of fossil fuels and cut pollution. Saving energy at home, like turning on the air conditioner only when we have to, or turning water heater down a few degrees, is also ultimately good for the environment. Individual actions can also turn into united powers when, for example, the whole neighborhood is mobilized to participate in a local campaign to oppose environmentally damaging policies。

　　There are, however, obstacles that stand in the way of individual action towards environmental conservation. The first obstacle is the lack of professional knowledge needed to cope with serious environmental issues like soil erosion and salinity, which require a significant amount of investigation and research. Another obstacle which makes individual action almost impossible is when an environmental emergency or accident happens, e.g. an oil spill near the bord der line, which would necessitate government intervention or even international coordination。

　　So, in conclusion, when it comes to environmental problems, individual actions are indispensable in the problem solving process. But the most pressing and complicated problems go far beyond an individual’s capability and so require the concerted effort of the government as well as the global community。

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