How living organisms changed the environment | AQA A Level Environmental Science Revision
Primrose Kitten Academy | GCSE & A-Level Revision・2 minutes read
Photosynthetic bacteria, specifically cyanobacteria, were crucial in increasing oxygen levels in the ocean, leading to the evolution of aerobic organisms. Living organisms, through processes like photosynthesis and transpiration, play a vital role in maintaining biogeochemical cycles and contributing to the water cycle.
Insights
- Cyanobacteria were pivotal in releasing oxygen into the ocean, kickstarting the evolution of aerobic organisms and the formation of the ozone layer, which shields Earth from harmful UV radiation.
- Living organisms, by engaging in photosynthesis and transpiration, actively regulate carbon levels, nutrient cycles, and water distribution, impacting global ecosystems and sustaining life on Earth.
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Recent questions
How did cyanobacteria impact oxygen levels?
They released diatomic oxygen into the ocean.