Quais as propriedades do ar
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Answer:
Although Australia is the driest nation in the world, with most of the country being desert, the nation is a major agricultural producer and exporter, with over 325,300 employed in agriculture, forestry and fishing as of February 2015.[1] Agriculture and its closely related sectors earn $155 billion-a-year for a 12% share of GDP. Farmers and graziers own 135,997 farms, covering 61% of Australia's landmass. Approximately 64% of all farms across Australia belong to the state, with a further 23% that are still owned by indigenous groups or tribes.[2] Across the country there is a mix of irrigation and dry-land farming. Australia leads the world with 35 million hectares certified organic, which is 8.8% of Australia's agricultural land[3] and Australia now accounts for more than half (51%) of the world's certified organic agriculture hectares.[4] The success of Australia to become a major agricultural power despite the odds is facilitated by its policies of long-term visions and promotion of agricultural reforms that greatly increased the country's agricultural industry
⭐o ar tem massa e isso ocupa espaço.
⭐ar pode ser comprimido.
⭐ar exerce pressão.