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Answers
Cluster analysis or clustering is the task of grouping a set of objects in such a way that objects in the same group are more similar to each other than to those in other groups.
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Answer:
Human pressure on nature has soared since the 1970s. We have been using more and more natural resources, and this has come at a cost.
If we lose large portions of the natural world, human quality of life will be severely reduced and the lives of future generations will be threatened unless effective action is taken.
Over the last 50 years, nature's capacity to support us has plummeted. Air and water quality are reducing, soils are depleting, crops are short of pollinators, and coasts are less protected from storms.
Prof Andy Purvis, a Museum research leader, has spent three years studying human interactions with nature. Alongside experts from more than 50 different countries, he has produced the most comprehensive review ever of the worldwide state of nature, with a summary published in the journal Science.
It was coordinated by the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES), an independent body that provides policymakers with objective scientific assessments about the state of knowledge regarding the planet’s biodiversity.
The latest report paints a shocking picture. We are changing nature on a global scale and the impacts of our actions are being distributed unequally.
'It was terrifying to see how close we are to playing Russian roulette with the only world we have,' says Andy. 'But it's also been inspiring, because there is a way out of this.
'What has given hope to the many scientists who worked on this report has been the way the public are fully aware of the dangers and want action. We just need to make sure the politicians remember that too.'