Reading topic: Beware of indoor green killers.

14. The more green plants you put indoors, the better. You need to choose carefully.

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16. Quote, make assumptions

Quote, quote newspapers and experts, which is vivid, typical and more convincing.

17。 In the 197s, in order to solve the shortage of feed for raising pigs, a kind of aquatic floating plant with strong fecundity-water hyacinth (scientific name water hyacinth) was introduced from abroad. Nowadays, this kind of floating plant has been flooded and is called "the culprit of green pollution". Due to the influence of the geographical location, climate and environment in the Pearl River Delta, water hyacinth has great vitality. Up to now, almost no insect viruses and other natural enemies can control its growth. Water hyacinth breeds very fast, and it breeds at a rate of twice a week. According to the monitoring, a plant of water hyacinth is flooded with 6, new plants every eight months. At present, as long as there is a river network in Guangdong Province, especially the rich and developed Pearl River Delta and other vast waters covered with water hyacinths, in the Pearl River Delta region where rivers are criss-crossing, it is difficult to see water, and most of the rivers are covered by hundred miles of water hyacinths, which causes the blockage of rivers, reservoirs, irrigation and drainage stations, the pollution of drinking water sources, the impact on waterway transportation, etc., and seriously affects the normal agricultural production and water conservancy irrigation and drainage.