Pesticides are chemicals that may be used to kill fungus, bacteria, insects, plant diseases, snails, slugs, or weeds among others. ... Herbicides are used
What can we know from the passage? D A. The chemicals in the soil will soon disappear. B. Pesticides are of great benefit to helpful bacteria. C. Crops grown with chemical fertilisers can provide more essential minerals. D. Crops grown with chemical fertilisers usually grow too fast.2. ...
lies in the different function each performs. A pesticide is a chemical substance that is used to kill, control, or repel pests, including mammals, fish, and insects. As the name implies, an insecticide affects only insects. This means that an insecticide is a subgroup of pesticides.
chemicals may make them ill and even cause cancer.In fact,some pesticides like DDT have been forbidden in most countries because of the damage they cause to people and the environment.As for chemical fertilisers,crops grown with them usually grow too fast to be rich in nutrition.The...
Brominated flame retardants are used in electronics, clothing and furniture, and are associated with abnormal function of the thyroid, which has a key role in childhood development, the society said. “Endocrine-disruptingchemicals in some way affect hormonal communication,” Bloom said. “And hormona...
Therehas been a growing concernin Chinaaboutgaming addiction among children. Governmentreportsin2018foundthataboutoneintenChinesechildrenwereaddictedtothe Internet.Thenewrulesarepartofanefforttopreventyoungpeoplefromspendingtoomuchtime onunhealthyentertainment.Thatincludeswhatofficialscallthe“irrationalfanculture”. ...
732.After failing more than 190 times, the team finally succeeded in 1971. 经历了190多次的失败之后,团队终于在1971年获得了成功。 733.Tu Youyou and her team members even insisted on testing the medicine on themselves t...
Chemicals that cause burns are drain cleaners, toilet bowl cleaners, and oven cleaners. Other chemical poisons found in the home include bleach, furniture polish, and lighter fluid. Chemicals include pesticides to kill insects, fungus, weeds, or rodents. These also include gasoline, windshield ...
While federal regulations have been gradually prohibiting the most dangerous pesticides, more remain in use. In addition, tests have found that some produce contains high levels of pesticides that have long been banned in the United States because these chemicals are still in the soil. And when ...
Farming and livestock have a substantial environmental footprint, from the high costs of land and water usage to the ecological consequences of pesticides, fertilizers, and animal waste. As a result, there are many opportunities for green technology in the area of agriculture. For example, organic...