P2U2 08Climate Change and Agriculture

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What is the current impact of climate change on agriculture according to the IPCC?

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Climate change is already affecting food and farming.

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How does climate change impact crop production regionally?

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Crop production is likely to increase in colder areas but decrease in warmer and drier regions.

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What are the potential benefits of longer growing seasons due to global warming?

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Longer growing seasons could benefit farming in colder high latitudes like northern Canada as winters become shorter and milder.

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How could warmer temperatures benefit livestock farming?

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Warmer temperatures could benefit raising animals in cold places by reducing freezing weather deaths and saving on heating costs for barns.

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Why is increased carbon dioxide beneficial for plants?

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Increased carbon dioxide, due to the burning of fossil fuels, is essential for plant growth.

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What are the major challenges to agriculture caused by soil erosion and desertification?

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Long droughts and overgrazing destroy plant cover, leading to soil erosion and desertification, particularly in semi-arid regions like the Sahel in Africa.

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How does water loss impact irrigation?

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Higher evaporation due to warmer temperatures leads to more intense droughts, reducing river levels and impacting irrigation, as seen with the Colorado River.

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What is the effect of warmer temperatures on pests and diseases?

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Warmer temperatures can expand the range of pests and diseases, such as the spread of sleeping sickness by tropical flies in Africa.

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How do rising sea levels threaten agriculture?

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Rising sea levels can flood coastal floodplains, damaging crops like rice and making the soil less suitable for farming.