Unit 2 Working the land TE MYKONGLONG
Unit 2 Working the land
谢谢观 更多课件、公开课等内容,敬请关注微信公众号: “中小学教学”以及“中学考试 回感就玩扫描二维码回诚条强 取更多资源 中小学 教学
更多课件、公开课等内容，敬请关注微信公众号： “中小学教学”以及“中学考试” 扫描二维码获 取更多资源
Task [8 Brainstorming see the wor.\agriculture> you What will you think of when you agriculture
Task 1: Brainstorming What will you think of when you see the word “agriculture”? agriculture
GME irrigation fertilizern plain arm prairie farmer agri cul ture field seed一 ane crop arable plants land food countryside grain
farm irrigation food crop field plants plain GMF grain farmer fertilizer seed prairie countryside land arable land agriculture
rice corn wheat t soybean cotton broomcorn peanut
wheat corn rice soybean cotton broomcorn peanut
d Terrace Drought 圈 Greenhouse Irrigated land 回 MYKONGLON0
Terrace Drought Irrigated land Greenhouse
Natural climate Controlled climate in bad weather, crops lost climate controlled, less damage The landscape is more The landscape loses its beautiful natural beauty Only arable land can Greenhouses can be built grow crops almost everywhere If there is a power failure, you may lose crops. MYKONGLONG
In the first picture: * Terraced fields. In the second picture: * Dry barren farmland. In the third picture: * Irrigated farmland. In the fourth picture: * Greenhouses. What are the differences? Compare the old and the modern ways of irrigation. Natural Climate Controlled Climate in bad weather, crops lost climate controlled, less damage The landscape loses its natural beauty. Only arable land can grow crops. Greenhouses can be built almost everywhere. The landscape is more beautiful. If there is a power failure, you may lose crops
What are genetically-modified foods? The term GM foods or gmOs(genetically-modified organisms)is most commonly used to refer to crop plants created for human or animal consumption using the latest molecular biology techniques These plants have been modified in the laboratory to enhance desired traits such as increased resistance to herbicides or improved nutritional content very rapidly and with great accuracy. For example, plant geneticists can isolate a gene responsible for drought tolerance and insert that gene into a different plant. The new genetically modified plant will gain drought tolerance as well
What are genetically-modified foods? The term GM foods or GMOs (genetically-modified organisms) is most commonly used to refer to crop plants created for human or animal consumption using the latest molecular biology techniques. These plants have been modified in the laboratory to enhance desired traits such as increased resistance to herbicides or improved nutritional content very rapidly and with great accuracy. For example, plant geneticists can isolate a gene responsible for drought tolerance and insert that gene into a different plant. The new geneticallymodified plant will gain drought tolerance as well
What are some of the advantages of Gm foods? The world population has topped 6 billion people and is predicted to double in the next 50 years. Ensuring an adequate food supply for this booming population is going to be a major challenge in the years to come. GM foods promise to meet this need in a number of ways: 1). Pest resistance 2.Disease resistance 3).cold tolerance 4). Drought tolerance/salinity tolerances). Nutrition Thirteen countries grew genetically-engineered crops commercially in 2000, and of these, the U.s. produced the majority. In 2000, 68% of all GM crops were grown by U.s. farmers. In comparison, Argentina, Canada and China produced only 23%, 7% and 1%, respectively Soybeans and corn are the top two most widely grown crops(82% of all GM crops harvested in 2000) MYKONGLONG
What are some of the advantages of GM foods? The world population has topped 6 billion people and is predicted to double in the next 50 years. Ensuring an adequate food supply for this booming population is going to be a major challenge in the years to come. GM foods promise to meet this need in a number of ways:1).Pest resistance 2).Disease resistance 3).Cold tolerance 4).Drought tolerance/salinity tolerance5).Nutrition Thirteen countries grew genetically-engineered crops commercially in 2000, and of these, the U.S. produced the majority. In 2000, 68% of all GM crops were grown by U.S. farmers. In comparison, Argentina, Canada and China produced only 23%, 7% and 1%, respectively. Soybeans and corn are the top two most widely grown crops (82% of all GM crops harvested in 2000)
What are some of the criticisms against GM foods? Most concerns about Gm foods fall into three categories: environmental hazards, human health risks. and economic concerns
What are some of the criticisms against GM foods? Most concerns about GM foods fall into three categories: environmental hazards, human health risks, and economic concerns