Reading comprehension – Electric cars

For each gap, fill in the text with one of the following phrases : with the greenhouse effect impact being up to two times larger, in view of different ratios of green-to-fuel electricity energy sources, than conventional cars, than a study of the electric car’s environmental impact during the use phase, relative to conventional diesel or gasoline vehicles, so that the use phase plays a more important role in the electric vehicle life cycle or in decision making regarding electricity infrastructure. Each phrase will be used one single time.

A Norwegian University of Science and Technology study released Thursday found electric vehicles have a potential for higher eco-toxicity and greenhouse impact . The study includes an examination of the electric car’s life cycle as a whole rather . The researchers conducted a comparison of the environmental impact of electric cars . In the case of mostly coal- or oil-based electricity supply, electric cars are disadvantageous compared to classic diesel cars . The researchers found that in Europe, electric cars pose a « 10% to 24% decrease in global warming potential (GWP) « . The researchers suggest to improve eco-friendliness of electric vehicles by « reducing vehicle production supply chain impacts and promoting clean electricity sources  » and using the electric cars for a longer time, .