The problem of plastic bags are serious problem . Plastic bags are a convenient of handling garbage , and are widely used and fairly lightweight and are particularly useful . it may clog waterways and take 1,000 years or more to break down In addition pollute the soil and water. But plastic is not biodegradable can affect both people , animals . And the animals will be affected more because it can not digest food , it is dead . Now the amount of plastic bags greatly increased . It also affects the earth and cause the phenomenon of greenhouse gases . If problem of plastic bags continues , the earth heats up and increased animals died .