Explain how regional variation in climate affect the lifestyle of people living in different part of india
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Answer:
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Explanation:
Rising sea levels and extreme events threaten native groups that inhabit low-lying island nations. Higher temperatures and reduced snow, ice, and permafrost threaten groups that live in mountainous and polar areas. Climate effects in these areas can affect hunting, fishing, transport, and other activities.
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Answer:
Explanation:
Changes in climate could have significant impacts on food production around the world. Heat stress, droughts, and flooding events may lead to reductions in crop yields and livestock productivity. Areas that are already affected by drought, such as Australia and the Sahel in Africa, will likely experience reductions in water available for irrigation. [2]
At middle to high latitudes, cereal crop yields are projected to increase slightly, depending on local rates of warming and crop type. At lower latitudes, cereal crop yields are projected to decrease. The greatest decreases in crop yields will likely occur in dry and tropical regions. In some African countries, for example, wheat yields could decline by as much as 35% by 2050. [4], [5]
Climate change is affecting many fisheries around the world. Increasing ocean temperatures have shifted some marine species to cooler waters outside of their normal range. Fisheries are important for the food supply and economy of many countries. For example, more than 40 million people rely on the fish caught in the Lower Mekong delta in Asia, which is the largest freshwater fishery in the world. Projected reductions in water flows and increases in sea level may negatively affect water quality and fish species in regions like these, affecting the food supply for communities that depend on these resources. [5], [6]
Climate change is very likely to affect global, regional, and local food security by disrupting food availability, decreasing access to food, and making utilization more difficult. [7] Climate risks to food security are greatest for poor populations and in tropical regions. The potential of climate change to affect global food security is important for food producers and consumers in the United States.
For more information about the impacts of climate change on agriculture and food production, please visit the Agriculture and Food Supply Impacts & Adaptation page.
Impacts on Water Supply and Quality
Four maps of Africa that show underweight children per square mile, high mortality risk, epidemic malaria, and epidemic meningitis. For all four categories, the risk zones tend to be concentrated across the middle and down the eastern coast of the continent.
Areas in Africa currently at risk for (a) hunger, (b) natural hazard-related disaster risks, (c) malaria (derived from historical rainfall and temperature data [1950-1996]), and (d) epidemics of meningococcal meningitis (based on epidemic experience, relative humidity [1961-1990] and land cover).
As climate changes, water is very likely to become scarce at least part of the time in many areas, but more plentiful part of the time in some areas as well. The availability of water is strongly related to the amount and timing of runoff and precipitation. With a 2.7°F rise in global mean temperature, annual average streamflow is projected to increase by 10-50% at high latitudes and in some wet tropical areas, but decrease by 10-50% in some dry regions at mid-latitudes and in the subtropics. As temperatures rise, snowpack is declining in many regions and glaciers are melting at unprecedented rates, making water less available in areas that depend on it from melting snow and glaciers during spring and summer. Droughts are likely to become more widespread. When it does rain, more precipitation is expected to fall in extreme heavy precipitation events. Increases in heavy precipitation events would not increase water supply, but instead result in increased flooding, except in river basins with large dams able to hold excess water until it is needed. [8]
Side by side satellite images of the Indus River. Only a sliver of the river is visible in the wide red region for the image on the left. On the right, the river is much wider and the red region around the river is much darker, showing water spread throughout the land surrounding the river. .
Water quality is important for ecosystems, human health and sanitation, agriculture, and other purposes. Increases in temperature, changes in precipitation, sea level rise, and extreme events could diminish water quality in many regions. Large rainstorms may cause large amounts of pollutants to enter rivers and estuaries, as excess water may overwhelm wastewater systems and natural buffers. Increased pollution as well as increasing water temperatures can cause algal blooms and potentially increase bacteria in water bodies. In coastal areas and small islands, saltwater from rising sea level and storm surges threaten water supplies. These impacts may require communities to begin treating their water in order to provide safe water resources for human uses. [1], [8]