How does the greenhouse effect cause an increase in global temperatures and how does climate change affect the food we eat?
The greenhouse effect is a natural process that keeps the Earth's surface warmer than it would be in the absence of certain gases in the atmosphere, known as greenhouse gases. These gases, such as carbon dioxide (CO2), methane (CH4), and water vapor, have the ability to trap heat from the sun and create a blanket-like effect around the planet.
Here's how the greenhouse effect causes an increase in global temperatures:
Climate Change's Impact on Food:
Climate change has a significant impact on the food we eat and the entire agricultural system:
In essence, climate change directly influences the agricultural systems that produce our food, leading to challenges in terms of food security, nutritional quality, and economic stability. Addressing climate change's impact on food requires implementing sustainable agriculture practices, developing climate-resilient crops, and promoting global efforts to mitigate greenhouse gas emissions.
Greenhouse gases allow sunlight to pass through the atmosphere and heat the planet, but then absorb and redirect some of the long wave radiation (heat) the planet emits. Energy flows down from the sun and up from the Earth and its atmosphere. The greenhouse effect is the way in which heat is trapped close to Earth's surface by “greenhouse gases.” These heat-trapping gases can be thought of as a blanket wrapped around Earth, keeping the planet toastier than it would be without them. Certain gases in the atmosphere absorb energy, slowing or preventing the loss of heat to space. Those gases are known as “greenhouse gases.” They act like a blanket, making the earth warmer than it would otherwise be. This process, commonly known as the “greenhouse effect,” is natural and necessary to support life. This phenomenon is called the greenhouse effect. It makes the surface of the earth warm and makes the survival of living beings possible. However, due to the increased concentration of greenhouse gases, the temperature of the earth has increased considerably leading to global warming. Carbon dioxide (CO2) is the main greenhouse gas emitted through human activities. These gases absorb and emit radiant energy in the thermal infrared range thus leading to the greenhouse effect. The main greenhouse gases in the atmosphere of Earth are carbon dioxide, water vapour, methane, nitrous oxide and ozone.The greenhouse effect is the process in which radiations from the sun are absorbed by the greenhouse gases like carbon dioxide, methane, and the water vapour. These radiations are not reflected back into space. Greenhouse effect insulates the earth surface and does not allow the freezing of earth surface. Greenhouse effect is a process by which solar radiation is absorbed by greenhouse gases and the temperature of Earth's atmosphere is increased. This increase in the temperature of the surroundings is responsible for global warming. Gases like Carbon dioxide, methane, nitrous oxide, water vapour, etc. Climate risks impacting the agricultural sector are direct risks to the food supply chain. All components of the food chain from food production, food processing, retailing/ distribution to consumption are impacted by accelerated climate variability. Climate change can disrupt food availability, reduce access to food, and affect food quality. For example, projected increases in temperatures, changes in precipitation patterns, changes in extreme weather events, and reductions in water availability may all result in reduced agricultural productivity. Excessive heat or shortage of water can impede crop growth, reduce yields, and influence irrigation, soil quality, and the ecosystem on which agriculture depends. Various factors influence the food security risk including natural calamities and water scarcity. Climate change has been found to have an impact on food safety, particularly on incidence and prevalence of food-borne diseases. Increased climate variability, increased frequency and intensity of extreme events as well as slow ongoing changes will affect the stability of food supply, access and utilization.
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