Ecological crypt
Free Book - "Ecological crypt"
by: Gulliver
With more people we will need more homes, so we can use mountains, deserts or
farmland. We may build high rises to reduce the amount of land used so we will need more
cement, sand and steel. Producing the cement and steel increases the carbon dioxide
release and transporting them to the building sites will use energy, probably oil. The sand is
becoming more of a problem...
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