Human impacts on biodiversity (Edexcel GCSE Biology): Quizzes
📚Quizzes
Practise the questions
13 questions from this quiz
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Practise the questions
13 questions from this quiz
What is biodiversity?
What is biodiversity?
Variety of living organisms in ecosystem
What pollution problem do fish farms cause in surrounding water?
What pollution problem do fish farms cause in surrounding water?
Waste, food, chemicals & antibiotics leak
Why do fish farms promote disease and parasite spread?
Why do fish farms promote disease and parasite spread?
High densities of fish in enclosures
How do carnivorous farmed fish like salmon impact wild fish populations?
How do carnivorous farmed fish like salmon impact wild fish populations?
Large protein needs deplete wild stocks
What problem occurs when farmed fish escape into the wild?
What problem occurs when farmed fish escape into the wild?
Compete with indigenous species
What are non-indigenous species?
What are non-indigenous species?
Species not naturally in an area
Why were cane toads introduced to Australia in the 1930s?
Why were cane toads introduced to Australia in the 1930s?
To control pests on sugar cane crops
Why have cane toads caused declines in native predator populations?
Why have cane toads caused declines in native predator populations?
Cane toads are toxic to many animals
What advantage do non-indigenous species often have over native species?
What advantage do non-indigenous species often have over native species?
No natural predators in new habitat
What is the primary cause of eutrophication?
What is the primary cause of eutrophication?
Overuse of fertilisers in agriculture
How do algal blooms affect underwater plants during eutrophication?
How do algal blooms affect underwater plants during eutrophication?
Block sunlight stopping photosynthesis
What causes oxygen depletion in water during eutrophication?
What causes oxygen depletion in water during eutrophication?
Bacteria decomposing dead plants use
Which is an example of positive human interaction with ecosystems?
Which is an example of positive human interaction with ecosystems?
Replanting hedgerows and woodlands