BRAINCAKEEcology
Revision notes for Ecology in AQA Combined Science: Trilogy (8464). Every lesson in BrainCake comes with R.E.C.I.P.E. recall steps, a quick check and spaced reviews.
- CommunitiesAn ecosystem is the interaction of a community of living organisms (biotic) with the non-living (abiotic) parts of their environment.
- Abiotic factorsAbiotic factors are the non-living factors of the environment.
- Biotic factorsBiotic factors are the living factors that affect a community.
- AdaptationsOrganisms have features called adaptations that help them to survive in the conditions where they normally live.
- Levels of organisationAlmost all life on Earth depends on photosynthetic organisms.
- How materials are cycledMany different materials, such as carbon and water, cycle through the abiotic (non-living) and biotic (living) parts of an ecosystem.
- BiodiversityBiodiversity is the variety of all the different species of organisms on Earth, or within one ecosystem.
- Waste managementThe human population is growing rapidly, and the standard of living is rising.
- Land useHumans reduce the amount of land that is available for other animals and plants.
- DeforestationDeforestation is the clearing of forests on a large scale.
- Global warmingThe levels of carbon dioxide and methane in the atmosphere are increasing, and they contribute to global warming, a rise in the average temperature…
- Maintaining biodiversityHuman interactions with ecosystems can be negative, such as pollution, using up land and deforestation, or positive.