https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:land-and-water-use/x0b0e430a38ebd23f:effects-of-land-and-water-use-i/v/impacts-of-agricultural-practices 2024-06-21T23:15:14.703721694Z Impacts of agricultural practices Agricultural practices like tilling, slash-and-burn farming, and the use of fertilizers can cause significant environmental damage. Tilling can lead to soil erosion, while slash-and-burn farming contributes to deforestation and climate change. Overuse of fertilizers can result in water pollution and harmful algal blooms. Sustainable alternatives exist, offering hope for more environmentally friendly agriculture. Wieteke Holthuijzen video https://cdn.kastatic.org/ka_thumbnails_cache/702c3210-3348-4ff6-a74e-1cdf237532b0_1280_720_base.png Impacts of agricultural practices Agricultural practices like tilling, slash-and-burn farming, and the use of fertilizers can cause significant environmental damage. Tilling can lead to soil erosion, while slash-and-burn farming contributes to deforestation and climate change. Overuse of fertilizers can result in water pollution and harmful algal blooms. Sustainable alternatives exist, offering hope for more environmentally friendly agriculture. https://cdn.kastatic.org/ka-youtube-converted/dbEtcjNxGVQ.mp4/dbEtcjNxGVQ.mp4 459 Human impacts on the environment https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:aquatic-and-terrestrial-pollution/x0b0e430a38ebd23f:sources-of-pollution/v/human-impact-on-aquatic-environments 2024-06-21T23:15:14.703721694Z Human impact on aquatic environments Human activities cause significant stress to aquatic environments, leading to devastating effects on ecosystems. Warming ocean temperatures damage coral reefs, oil spills harm marine life, and nutrient pollution creates oceanic dead zones. Additionally, the introduction of toxic substances like mercury further threatens aquatic biodiversity. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/238f89e4-6b9a-4b3e-aeb5-1ae104cdfb17_1280_720_base.png Human impact on aquatic environments Human activities cause significant stress to aquatic environments, leading to devastating effects on ecosystems. Warming ocean temperatures damage coral reefs, oil spills harm marine life, and nutrient pollution creates oceanic dead zones. Additionally, the introduction of toxic substances like mercury further threatens aquatic biodiversity. https://cdn.kastatic.org/ka-youtube-converted/nZjMRq9tev8.mp4/nZjMRq9tev8.mp4 282 Human impacts on the environment https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:global-change/x0b0e430a38ebd23f:greenhouse-effect/v/greenhouse-effect-and-greenhouse-gases 2024-06-28T21:00:15.59562973Z Greenhouse effect and greenhouse gases The greenhouse effect, driven by gases like carbon dioxide, methane, and water vapor, is essential for maintaining Earth's habitable temperatures. However, excessive concentrations of these gases—particularly due to human activities—can lead to global warming and climate change. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/27e417aa-bb45-422d-bb99-7e0e28da1250_1280_720_base.png Greenhouse effect and greenhouse gases The greenhouse effect, driven by gases like carbon dioxide, methane, and water vapor, is essential for maintaining Earth's habitable temperatures. However, excessive concentrations of these gases—particularly due to human activities—can lead to global warming and climate change. https://cdn.kastatic.org/ka-youtube-converted/YpfxiDktSoI.mp4/YpfxiDktSoI.mp4 419 Human impacts on the environment https://www.khanacademy.org/science/hs-bio/x230b3ff252126bb6:biodiversity-and-human-impacts/x230b3ff252126bb6:global-change-biology/a/global-change 2026-04-28T11:10:43.64230357Z Learn: Global change Learn about how human activities result in planetary-scale changes among Earth's natural systems. article https://www.khanacademy.org/science/hs-integrated-physics-chemistry-tx/xffee0b339ed6ea67:explore-science-through-simulations/xffee0b339ed6ea67:explore-climate-change-through-simulations/a/phet-simulation-explore-climate-change-ipc 2026-06-30T20:30:39.806397097Z PhET simulation: Explore climate change Learn about the greenhouse effect and climate change using an interactive PhET simulation. article https://www.khanacademy.org/science/hs-bio/x230b3ff252126bb6:biodiversity-and-human-impacts/x230b3ff252126bb6:sustainability/a/human-activities-and-sustainability 2026-04-29T11:20:48.686238051Z Learn: Human activities and sustainability Learn how sustainability reduces the impact of human activities and conserves natural resources for future generations to use. article https://www.khanacademy.org/science/hs-integrated-physics-chemistry-tx/xffee0b339ed6ea67:energy-technology-and-the-environment/xffee0b339ed6ea67:human-impacts-on-the-environment/e/apply-human-impacts-on-water-and-soil 2026-06-30T16:30:41.535282189Z Apply: Human impacts on water and soil Apply your knowledge of human impacts on water and soil in this set of free, standards-aligned practice questions. donna fig exercise https://www.khanacademy.org/science/hs-integrated-physics-chemistry-tx/xffee0b339ed6ea67:energy-technology-and-the-environment/xffee0b339ed6ea67:human-impacts-on-the-environment/e/apply-human-activities-and-sustainability 2026-06-30T16:30:41.535282189Z Apply: Human activities and sustainability Apply your understanding of human activities and sustainability in this set of free, standards-aligned practice questions. Donna Fig exercise