Desertification is the degradation of land in arid‚ semiarid and dry sub-humid areas. It is a gradual process of the loss of soil productivity and the thinning out of the vegetative cover due to human activities and climatic variations‚ such as frequent droughts and floods. The main climate-related causes of desertification are lower rainfall and higher temperatures. Among human causal factors‚ there are examples such as over-cultivation‚ overgrazing‚ deforestation and poor irrigation practices. Desertification
Premium Sahara Africa
A natural disaster is the effect of a natural hazard (e.g.‚ flood‚ tornado‚ hurricane‚ volcanic eruption‚ earthquake‚ heatwave‚ or landslide). It leads to financial‚ environmental or human losses. The resulting loss depends on the vulnerability of the affected population to resist the hazard‚ also called their resilience. if these disasters continues it would be a great danger for the earth.[1] This understanding is concentrated in the formulation: "disasters occur when hazards meet vulnerability
Premium Volcano
Unfortunately five protestors were killed. In Asia‚ Nepal more than forty thousand people affected by floods and droughts. India has blocked the export of rice. But this ban have been removed‚ India can export rice now. In China‚ Sichuan there was a drought which affected 3 million hectares of crops. And it was the worst drought of last fifty years. In Armenia and Afghanistan drought and high
Premium Poverty Famine Water
Global warming has a big effect on the Earth. It can spread diseases. Global warming‚ warms the water which causes erratic weather. It increases the probability and intensity of droughts and heat waves. Global warming can also lead to the melting of the polar ice caps. Finally it can have great economic consequences. Global warming can lead to a spread in diseases across the world. As northern countries warm‚ disease carrying insects migrate north‚ bringing plague and disease with them. With warmth
Premium Global warming Weather Earth
for the oversaturation of the land due to excessive rainfall. This would have resulted in the abandoning of Mayan cities. The flip side to that theory is that the Mayans’ were eradicated due to massive drought. This is really a controversial theory because it is thought that drought does not typically happen in the areas where the Mayans’
Premium Maya civilization Maya peoples
for The New York Times Updated: July 26‚ 2012 In the summer of 2012‚ scorching heat and the worst drought in nearly a half-century sent food prices up‚ spooking consumers and leading to worries about global food costs. On July 25‚ the United States government said it expected the record-breaking weather to drive up the price for groceries in 2013‚ including milk‚ beef‚ chicken and pork. The drought has affected 88 percent of the corn crop‚ a staple of processed foods and animal feed as well as the
Premium Famine Agriculture United Nations
Africa are of a poor nature and so flooding happens they lose out or at worst perish from malnourishment as a result of the flooding from the sea and decreased rainfall‚ this links to my next paragraph‚ As a result of climate change Africa has seen droughts rising especially in the Sahara. The cause of this is most likely the decreased rainfall that in some places is predicted to drop by at least 10-20% a huge amount considering the amount of vegetation and animals supported by this rainfall which by
Premium Africa Poverty
Different crops such as in sorghum‚ eggplant and tomatoes. In screening for drought tolerance‚ we have to look into osmotic adjustments more so is the drought avoidance. In looking into drought avoidance‚ the ability to develop longer roots so as to find moisture in the soil is considered. Also‚ for example in corn‚ the leaf rolling ability is also observed so as to conserve the limited water in the plant body. In drought‚ we also see stomatal conductance‚ closure. The breeders and physiologist do
Premium Fungus Photosynthesis Water
books regarding their gods‚ which taught us a lot about the mayan empire. A common reason the empire collapsed was drought which stopped the mayans from agriculture‚ and many more examples of the falling of the empire. While reading article one‚ No name and was provided‚ They stated‚ “ Many theories attempt to explain why Maya civilization collapsed‚ which include disease‚ war‚ drought‚ and economic turmoil.” No one could explain any of these theories. Evidence tried supporting that disease could
Premium Maya civilization Guatemala Maya peoples
Everyday we use water‚ whether it’s for drinking purposes‚ going to the bathroom‚ and many other daily tasks. However‚ people have abused this privilege in having access to water. Water is unknowingly squandered by situations such as pollution‚ drought‚ or straight up negligence in our own homes. If we‚ as a society do not take any action at all‚ then our water supply will surely plummet leaving us to live in a catastrophic world. So what can we do to prevent
Premium Water Water resources Water supply