1) Increasing use of fertilisers for food production. a) Human b) Physical 2) The Earth's tilt on its axis changes every 41,000 years. a) Human b) Physical 3) There is an increased demand for wood for homes and furniture. a) Human b) Physical 4) There is a large market for beef and other meat products. a) Human b) Physical 5) The number of sunspots changes peaks every 11 years. a) Human b) Physical 6) Air conditioning systems are prevalent in many countries like China and India. a) Human b) Physical 7) Large amounts of household waste go to landfill. a) Human b) Physical 8) Peat bogs are being reclaimed for agriculture or for wind farms. a) Human b) Physical 9) Ground permanently frozen is starting to melt. a) Human b) Physical 10) Rice is a very popular food grown in south-east Asia. a) Human b) Physical 11) The amount of Arctic sea ice has decreased over the past 40 years. a) Human b) Physical 12) Warm ocean currents in the North Atlantic were “blocked” by colder currents in 2010 and 2013. a) Human b) Physical

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