https://www.khanacademy.org/science/grade-9-chemistry-snc-aligned/x22d5b83c2ea2dc38:water-and-fertilizers/x22d5b83c2ea2dc38:fertilizers/v/fertilizers-manures-pk 2025-12-18T16:50:45.096818701Z Fertilizers & manures Created by Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Fertilizers & manures Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/rwEF9BIlXHI.mp4/rwEF9BIlXHI.mp4 321 Chemistry and biotechnology in agriculture https://www.khanacademy.org/science/grade-11-biology-snc-aligned/x58c107ba92d3f0b2:q-plants/x58c107ba92d3f0b2:plant-nutrition-and-gas-exchange/v/plant-nutrition-ur 2025-08-08T00:24:37.843818748Z Plant Nutrition Created by Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Plant Nutrition Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/KckIk2xudcQ.mp4/KckIk2xudcQ.mp4 363 Chemistry and biotechnology in agriculture https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:land-and-water-use/x0b0e430a38ebd23f:types-of-sustainable-practices/v/integrated-pest-management 2022-09-07T01:03:50.067296221Z Integrated pest management Integrated pest management (IPM) is a combination of methods used to effectively control pest species while minimizing the disruption to the environment. These methods include biological, physical, and limited chemical methods such as biocontrol, intercropping, crop rotation, and natural predators of the pests. Integrated pest management (IPM) minimizes disruptions to the environment and threats to human health but can be complex and expensive. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/03b8bb47-988e-4c38-84f0-27b2fb4590d0_1280_720_base.png Integrated pest management Integrated pest management (IPM) is a combination of methods used to effectively control pest species while minimizing the disruption to the environment. These methods include biological, physical, and limited chemical methods such as biocontrol, intercropping, crop rotation, and natural predators of the pests. Integrated pest management (IPM) minimizes disruptions to the environment and threats to human health but can be complex and expensive. https://cdn.kastatic.org/ka-youtube-converted/z2AMnP4nn2E.mp4/z2AMnP4nn2E.mp4 403 Chemistry and biotechnology in agriculture https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:atmospheric-pollution/x0b0e430a38ebd23f:other-atmospheric-pollution/v/acid-rain 2024-06-21T23:15:14.703721694Z Acid rain Acid rain, caused by pollution from burning fossil fuels, has harmful effects on the environment and human health. It forms when sulfur and nitrogen oxides interact with UV radiation and water molecules, creating corrosive sulfuric and nitric acid vapors. Acid rain damages buildings, contaminates water, acidifies soils, and harms forests. Despite reductions in emissions, it remains a global issue. Khan Academy video https://cdn.kastatic.org/ka_thumbnails_cache/d9f874cf-1450-41c3-87f7-273d42f816f3_1280_720_base.png Acid rain Acid rain, caused by pollution from burning fossil fuels, has harmful effects on the environment and human health. It forms when sulfur and nitrogen oxides interact with UV radiation and water molecules, creating corrosive sulfuric and nitric acid vapors. Acid rain damages buildings, contaminates water, acidifies soils, and harms forests. Despite reductions in emissions, it remains a global issue. https://cdn.kastatic.org/ka-youtube-converted/P4I-abHPa-I.mp4/P4I-abHPa-I.mp4 461 Chemistry and biotechnology in agriculture https://www.khanacademy.org/science/ap-biology/gene-expression-and-regulation/biotechnology/v/introduction-to-genetic-engineering 2023-06-22T09:47:49.118446933Z Introduction to genetic engineering Genetic engineering, although a recent concept, has roots in ancient human practices like selective breeding of animals and plants. Today, recombinant DNA technology enables precise gene manipulation, creating genetically modified organisms (GMOs) with enhanced traits. While offering benefits like robust crops and new medicines, it raises bioethical concerns, especially regarding human genome modification. Sal Khan video https://cdn.kastatic.org/googleusercontent/3clMWOpt5Uaeas73dc3TP0zoyE6XNIJ3DmOL7ucWsg7f9XnIADDuEf09Plf9gARd6oDCljT2af9ui7M-AzLQ-TnU Introduction to genetic engineering Genetic engineering, although a recent concept, has roots in ancient human practices like selective breeding of animals and plants. Today, recombinant DNA technology enables precise gene manipulation, creating genetically modified organisms (GMOs) with enhanced traits. While offering benefits like robust crops and new medicines, it raises bioethical concerns, especially regarding human genome modification. https://cdn.kastatic.org/ka-youtube-converted/JNgONZ8Dq9I.mp4/JNgONZ8Dq9I.mp4 391 Chemistry and biotechnology in agriculture https://www.khanacademy.org/science/ap-biology/gene-expression-and-regulation/biotechnology/v/applications-of-dna-technologies 2023-06-22T09:47:49.118446933Z Applications of DNA technologies DNA technology revolutionizes medicine, forensics, and agriculture. Recombinant DNA creates insulin and growth hormones, improves vaccine safety, and helps solve crimes through genome analysis. Genetically modified crops enhance resistance, delay ripening, and support farmers, feeding more people and boosting the economy. Ronald Sahyouni video https://cdn.kastatic.org/googleusercontent/bRNeSMzdpR-eVlMIPf83qr1x0CYctUwEkchzdlCY4QLnLBN82gTxDelT2j6wgSeE2mVvv8lP0YNPnyb_nQfCCMI Applications of DNA technologies DNA technology revolutionizes medicine, forensics, and agriculture. Recombinant DNA creates insulin and growth hormones, improves vaccine safety, and helps solve crimes through genome analysis. Genetically modified crops enhance resistance, delay ripening, and support farmers, feeding more people and boosting the economy. https://cdn.kastatic.org/ka-youtube-converted/gqMqYYcJgz4.mp4/gqMqYYcJgz4.mp4 301 Chemistry and biotechnology in agriculture https://www.khanacademy.org/science/ka-biology-grade-12/x406cf103e0507862:biotechnology-and-its-applications/x406cf103e0507862:ethical-concerns/a/biopiracy 2023-02-16T23:01:06.897180825Z Biopiracy An overview of biopiracy, and a few famous examples of it. article https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:aquatic-and-terrestrial-pollution/x0b0e430a38ebd23f:types-of-aquatic-and-terrestrial-pollution/a/persistent-organic-pollutants 2024-07-25T18:05:10.32062766Z Persistent organic pollutants Persistent organic pollutants can remain intact in the environment for long periods of time, have a long-range transport potential (through air, water, and soil), and bioaccumulate in living organisms. article https://www.khanacademy.org/science/grade-11-chemistry-snc-aligned/x203b0fc81a964b2d:nitrogen-and-sulfur/x203b0fc81a964b2d:acid-rain/e/acid-rain 2025-04-06T05:39:20.526945352Z Acid Rain Lets answer some questions on acid rain! Shankar R exercise