Greenhouse Effect The greenhouse effect is a natural phenomenon that warms the earth and enables it to support life. Without it, the average temperature on earth would be around -18 degrees C, instead of the current +15 degrees C - a frozen wilderness. It works on the same principles as the ordinary glass garden greenhouse, where glass allows light to get in, but does not allow for the heat to get out. This makes for a …showed first 75 words of 1456 total…

…showed last 75 words of 1456 total…Buy milk cartons, not plastic bottles. Bring your own bag rather than using plastic bags. Avoid products with excess packaging. Avoid fast food - this is nearly always overpackagaged. Cycle or walk whenever you can. Try to use public transport instead of your car. Form a car pool with colleagues. Have your car checked regularly - small things like the wrong wheel alignment, tyre pressure, or dragging brakes can increase your car's petrol consumption unnecessarily.