https://www.khanacademy.org/science/hs-bio/x230b3ff252126bb6:ecology-and-natural-systems/x230b3ff252126bb6:organization-of-natural-systems/v/biotic-and-abiotic-factors-in-earths-natural-systems 2024-05-28T21:41:02.467178644Z Biotic and abiotic factors in Earth’s natural systems Natural systems are made up of both biotic factors (living organisms and their interactions) and abiotic factors (non-living parts of the environment such as sunlight and temperature). Earth can be divided into four systems, called spheres: the atmosphere (gases surrounding Earth), the biosphere (all living organisms), the geosphere (Earth's interior and surface), and the hydrosphere (all forms of water). Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/1b8f7160-2496-44ec-8a88-7e34c7fc5c26_1280_720_base.png Biotic and abiotic factors in Earth’s natural systems Natural systems are made up of both biotic factors (living organisms and their interactions) and abiotic factors (non-living parts of the environment such as sunlight and temperature). Earth can be divided into four systems, called spheres: the atmosphere (gases surrounding Earth), the biosphere (all living organisms), the geosphere (Earth's interior and surface), and the hydrosphere (all forms of water). https://cdn.kastatic.org/ka-youtube-converted/GxKWCiZHsvo.mp4/GxKWCiZHsvo.mp4 314 Structure of the Ecosystem https://www.khanacademy.org/science/revision-term-2-tg-biology-class-8/x04828215b460a495:week-1/x04828215b460a495:different-ecosystems/v/interactions-between-organisms 2025-10-01T04:00:43.064865848Z Interactions between Organisms This video talks about how biotic (living) and abiotic (non-living) parts of nature team up to form ecosystems—from ponds to forests to farms. In this video, you'll learn: 1. The difference between biotic and abiotic components. 2. Define an ecosystem and spot its types: aquatic, terrestrial, and human-made . 3. Understand biotic–abiotic biotic–biotic interactions and abiotic–abiotic interactions with examples 4. Understand how these interactions keep ecosystems balanced Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Interactions between Organisms This video talks about how biotic (living) and abiotic (non-living) parts of nature team up to form ecosystems—from ponds to forests to farms. In this video, you'll learn: 1. The difference between biotic and abiotic components. 2. Define an ecosystem and spot its types: aquatic, terrestrial, and human-made . 3. Understand biotic–abiotic biotic–biotic interactions and abiotic–abiotic interactions with examples 4. Understand how these interactions keep ecosystems balanced https://cdn.kastatic.org/ka-youtube-converted/PBZrMu1UN5c.mp4/PBZrMu1UN5c.mp4 478 Structure of the Ecosystem https://www.khanacademy.org/science/revision-term-2-tg-biology-class-8/x04828215b460a495:week-1/x04828215b460a495:different-ecosystems/e/interactions-among-organisms 2026-04-07T23:55:07.30621384Z Interactions among organisms Explore how interactions in an ecosystem create benefits such as soil protection by roots, oxygen release by plants, cooling and moisture retention under trees, and the role of abiotic–abiotic relations like sunlight and wind. This exercise helps Class 8 students identify biotic–abiotic, abiotic–abiotic, and biotic–biotic interactions and understand their importance for ecosystem balance. Yajurva Joshi exercise https://www.khanacademy.org/science/revision-term-2-tg-biology-class-8/x04828215b460a495:week-1/x04828215b460a495:different-ecosystems/v/balance-in-an-ecosystem 2025-10-12T15:01:17.33690735Z Balance in an Ecosystem Explore how interactions between different organisms of our planet keep our ecosystems healthy and balanced. Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Balance in an Ecosystem Explore how interactions between different organisms of our planet keep our ecosystems healthy and balanced. https://cdn.kastatic.org/ka-youtube-converted/Dert3xLqikw.mp4/Dert3xLqikw.mp4 206 Structure of the Ecosystem https://www.khanacademy.org/science/revision-term-2-tg-biology-class-8/x04828215b460a495:week-1/x04828215b460a495:different-ecosystems/e/how-do-interactions-maintain-balance-in-an-ecosystem 2026-04-08T00:54:09.631945657Z How do interactions maintain balance in an ecosystem? Engaging Class 8 Science exercise on ecosystem balance. Covers competition, mutualism, commensalism, parasitism, and real-life examples through MCQs, T/F, match, and scenarios. Yajurva Joshi exercise