Listen to the recording again and supply the missing information. Roads, paved roads are everywhere and sometimes seem like1)___________________. But, of course, roads are not part of nature and, if fact, road construction can have harmful effects on the environment and seriously2)______________________________________. One harmful environmental effect of roads is that they contribute to the movement of plant species from one area to another. This causes problem for existing plants, plants already growing in that area because when a new plant species gets into an area where it wasn’t growing before,3)____________________________________________. For example, this happened in California with a weed called the yellow star thistle. What happened was the star thistle’s seeds4)__________________________________________ and5)________________________. This put the star thistle in competition for natural resources, like water, with the original plant life of the area.6)_________________________________________. Also roads, especially major highways, can act as barriers and divide up an animal’s habitat into smaller ones where there is not enough food to support the population. These busy highways, with cars speeding past day and night,7)_______________________. So, they sometimes get shut in on a small piece of land where there isn’t enough food to support them. This is a serious problem for8)______________________________________. For example, there are these foxes called Kit foxes that live in the southwestern United States, 9)___________________________________which are spread out over large areas of open grasslands. And now, because of these roads, the Kit fox population has declined significantly because now they don’t get enough food.