Biology AQA Past Paper (2015) - Topic 7. Ecology: What is eutrophication?
Eutrophication is an enrichment of water by nutrient salts that causes structural changes to the ecosystem such as: increased production of algae and aquatic plants (algal blooms), depletion of fish species, general deterioration of water quality and other effects that reduce and preclude use. In most cases is caused by the surface run-off of pesticides and fertilizers (agriculture development) into lakes and other non-running waters.
DM
Related Biology A Level answers
All answers ▸Describe the process of phagocytosis and how antigen presentation leads to antibody production (9 marks)
Describe the adaptations for efficient gas exchange in the lungs?
How exactly can new species evolve from within a population, and how can we classify them as such?
In what ways have human activities contributed to global warming?