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Funding for this program is provided by annenberg media. Narrator agriculture provides us with the food we need to survive. To keep pace with an evergrowing population, scientists created new seed varieties that provided outstanding yields but also required increased inputs more fertilizer and more pesticides but at what cost to the environment . Peter kenmore of the United Nations food and Agriculture Organization has been working with farmers for 30 years to decrease the use of pesticides in rice production. Dr. Kenmore we have been able basically to substitute brains for chemicals. And in t...

¿y roberto . Todavia no se sabe nada. Siguen trabajando. Pero. ¿estan seguros de que tiene suficiente aire . Hombre iroberto iroberto iroberto tambien en Este Episodio vamos a aprender vocabulario relacionado con la ciudad. En los barrios se pueden encontrar varios negocios como mercados. Supermercados. Farmacias. Tiendas pequenas. Y grandes almacenes. Y vamos a comparar las grandes ciudades con los pueblos. Los pueblos son diferentes de las grandes ciudades. Aunque cada pueblo tiene un centro no hay edificios muy altos. Generalmente, el centro consiste en una plaza y muchas veces en la plaz...

And in that sense, the growth rate stays up but less chemicals are used. Narrator in the yaqui valley of mexico, researchers are finding that excess fertilizer runoff from wheat crops is affecting marine life in the gulf of california. So they are turning to technology to decrease fertilizer inputs without decreasing yields. Dr. Ortizmonasterio Technology Like this can result in a winwin situation where the farmer benefits and at the same time the environment benefits. Narrator by showing farmers how to reduce pesticide and Fertilizer Use both Research Teams hope to minimize Environmental Impa...

What id like to do now is start with the tenor section, then the alto and the soprano, and then ill add the bass. One, two, three, and jesus is a rock in a weary land. narrator the subject of musical texture raises a number of questions. How are the different voices or instruments in a performance put together and organized . Lets add the altos, altos, tenor, and bass, ready jesus is a rock in a weary land. narrator how many parts are there . Does one voice or melody stand out . How do the various parts relate to each other . One more time, without piano. Jesus is a rock in a weary land. man a...

To decrease the use of pesticides in Rice Production. Dr. Kenmore we have been able basically to substitute brains for chemicals. And in that sense, the growth rate stays up but less chemicals are used. Narrator in the yaqui valley of mexico, researchers are finding that excess fertilizer runoff from wheat crops is affecting marine life in the gulf of california. So they are turning to technology to decrease fertilizer inputs without decreasing yields. Dr. Ortizmonasterio Technology Like this can result in a winwin situation, where the farmer benefits and at the same time the environment benef...