Combined ScienceCode 5129
Effects of humans on ecosystems
What this topic asks you to be able to do
- Outline what drives deforestation, and describe what it leads to, limited to its influence on biodiversity, extinction, loss of soil, flooding and the concentration of carbon dioxide in the atmosphere
- Describe how people affect ecosystems by excessively harvesting plant and animal species, bringing a species that is not native into an ecosystem, polluting water with untreated sewage and fertilisers containing nitrogen, limited to the drop in dissolved oxygen and the deaths of organisms it causes, plastics that cannot biodegrade in the environment, in both aquatic and terrestrial ecosystems