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  2. Twinwall plastic - Wikipedia

    en.wikipedia.org/wiki/Twinwall_plastic

    Although single layer polycarbonate sheeting is more flexible than polycarbonate in twinwall configuration, it still retains significant advantages over alternative materials, including glass. A typical 6mm sheet has a density of 0.72 g/cm^2 [ 6 ] and a thermal insulation R value of 0.3 m^2°C/W, while allowing 80% of visible light pass through ...

  3. List of commercially available roofing materials - Wikipedia

    en.wikipedia.org/wiki/List_of_commercially...

    The reduced cost of this particular style of roofing is especially apparent in its application and removal. Installation is very streamlined and a rapid process. Depending on the size of the roof and the experience of the crew, it is possible to remove old shingles and apply new ones on 2-3 houses in one day.

  4. Greenhouse - Wikipedia

    en.wikipedia.org/wiki/Greenhouse

    The terms greenhouse, glasshouse, and hothouse are often used interchangeably to refer to buildings used for cultivating plants. The specific term used depends on the material and heating system used in the building. Nowadays, greenhouses are more commonly constructed with a variety of materials, such as wood and polyethylene plastic. [2]

  5. Solar power in the United States - Wikipedia

    en.wikipedia.org/wiki/Solar_power_in_the_United...

    After years of cost reduction, the average US price per watt was between $2.51 to $3.31 in 2020 for 10 kW systems, [89] and $1.05/W for utility systems. [ 90 ] Another type of distributed generation implemented by a utility company was the world's first grid-connected pole-attached solar panels of Public Service Enterprise Group in New Jersey.

  6. Greenhouse gas emissions - Wikipedia

    en.wikipedia.org/wiki/Greenhouse_gas_emissions

    India emitted 2.8 Gt of CO 2eq in 2016 (2.5 including LULUCF). [242] [243] 79% were CO 2, 14% methane and 5% nitrous oxide. [243] India emits about 3 gigatonnes CO 2eq of greenhouse gases each year; about two tons per person, [244] which is half the world average. [245] The country emits 7% of global emissions. [246]

  7. Plant nursery - Wikipedia

    en.wikipedia.org/wiki/Plant_nursery

    A −15 °C frost hardiness level has been used to determine the readiness of container stock to be moved outside from the greenhouse, and −40 °C has been the level determining readiness for frozen storage (Colombo 1997). [23]

  8. Global warming potential - Wikipedia

    en.wikipedia.org/wiki/Global_warming_potential

    Global warming potential of five greenhouse gases over 100-year timescale. [7] The global warming potential (GWP) depends on both the efficiency of the molecule as a greenhouse gas and its atmospheric lifetime. GWP is measured relative to the same mass of CO 2 and evaluated for a specific timescale. [8]

  9. Wikipedia:Language learning centre/Word list - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Language...

    aardvark; aardwolf; aaron; aback; abacus; abaft; abalone; to abandon; abandoned; abandonment; abandons; abase; abased; abasement; abash; abashed; to abate; abated ...

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