Effects of Humans on the Environment (OCR A-Level Biology A): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
ShowHide
Practise the questions
10 questions from this quiz
What role do krill play in Antarctic marine ecosystems?
What role do krill play in Antarctic marine ecosystems?
Feed on phytoplankton and are eaten by many
By what percentage has sea ice area declined around Antarctica's Peninsula over the past 30 years?
By what percentage has sea ice area declined around Antarctica's Peninsula over the past 30 years?
40%
What approach does CCAMLR use to regulate Antarctic fisheries?
What approach does CCAMLR use to regulate Antarctic fisheries?
Ecosystem approach minimising harm overall
How many seeds can a single large Rhododendron ponticum bush produce annually?
How many seeds can a single large Rhododendron ponticum bush produce annually?
1 million
When should regrowth be sprayed with herbicides after cutting R. ponticum for large infestations?
When should regrowth be sprayed with herbicides after cutting R. ponticum for large infestations?
Approximately 18 months after cutting
Which plant pathogen does R. ponticum host that threatens conifers?
Which plant pathogen does R. ponticum host that threatens conifers?
Phytophthora ramorum
How much carbon does the peat in the Flow Country store?
How much carbon does the peat in the Flow Country store?
400 million tonnes
What conditions are needed for blanket bog formation?
What conditions are needed for blanket bog formation?
High rainfall, poor drainage, acidic soil
What was the tiger population estimate in the Terai region during 2012-2013?
What was the tiger population estimate in the Terai region during 2012-2013?
239 individual adults
What are essential characteristics of effective wildlife corridors?
What are essential characteristics of effective wildlife corridors?
Sufficient width, maintenance, connectivity