Climate Change
U.K Climate Change and its Effects The threat of climate change will have impact in the following areas of life in the British Isles: • Sea level rises • Flooding • Ocean currents • Health • Agricultural • Wildlife However there may be new opportunities offered by a warmer climate. However, the overall effect of climate change for the world is NEGATIVE. Rising Sea Levels Sea level will rise by between 10cms and 90cms this century depending on how we reduce CO2 emissions. The coastline of Britain could change dramatically. Low lying areas could be invaded by the sea e.g. East Anglia Ocean Currents The Gulf Stream brings warmth to the UK and north-west Europe and is the reason we have mild winters. The average annual temperature of north-west Europe is about 9C above the average for our latitude. If greenhouse gas emissions continue to increase, the temperature and density of the sea water in the North Atlantic will change with dramatic consequences. The gulf stream may stop or be greatly reduced. This would mean that less heat is brought to north-west Europe - harsher winters and mild summers. Flooding The UK has experienced devastating floods throughout the last five years, which have affected thousands of people and caused millions of pounds worth of damage. Last Summer's floods shocked the country - Large town were cut off or under
Socio-economic and political impacts of climate change in Africa
'The cause of the warming of the African continent (and of the world as a whole) over the past 100 years is not clear. The change in atmospheric composition associated with rising levels of greenhouse gases must be one of the most plausible explanations, but there are other possibilities (Wigley et al., 1992). The trend may, for example, be the result of natural climate variability, shifts in the ocean temperature distribution or changes in the solar output. The progressive degradation of dryland areas, by reducing surface soil moisture, may have contributed to the warming over Africa, although the results of recent analyses suggest that the effects may account for no more than a small proportion of the trend observed over the continent as a whole (cf. Balling, 1991, with Hulme and Kelly, 1993). Whatever the cause of the warming trend, it provides one benchmark against which we can judge the projections of future climate warming for Africa' All that one needs to look at is the Annual rainfall during the mosts recent three decades to see that there has been around 20 to 40 percent less than was expected around the 1960's. Take extreme years such as 1984 and 1990 where rainfall levels have dropped below 50 percent of what is normally expected. But the real question we are trying to answer here is how sensitive are African natural resources, managed ecosystems and national
Examine the causes and the effects of biodiversity loss in the Tropical Rainforests
Examine the causes and the effects of biodiversity loss in the TRF Biodiversity can be defined as the variety of all forms of life on earth (plants, animals and micro-organisms). The tropics are the richest areas for biodiversity as tropical rain forests contain over 50% of the worlds species in just 7% of the worlds land. They account for 80% of the world's insects and 90% of its primates. Even though biodiversity benefits us humans in countless ways we tend to be oblivious to this fact and instead, the biodiversity on earth is gradually diminishing. There are many reasons for the loss of biodiversity and the most prominent include Globalization & Cattle Ranching, Hydroelectric Power (HEP), Migration and Logging. Similar to how there are numerous causes for the loss of biodiversity, these causes also have many drastic effects. As mentioned in the introductory paragraph, globalization and cattle ranching is one of the major causes for the loss of biodiversity. Globalization can be defined as the world coming together for trading purposes. This contributes to the loss of biodiversity as globalization is directly linked with deforestation. For instances, huge global corporations like McDonalds own countless amounts of cattle which are often located in deforested areas. In addition to this, much forest land in the Brazilian Amazon is also deforested in order to enable the
Factors affecting rates of population change across the world.
Alex Calloway Factors affecting rates of population change across the world Throughout the world today, ones can see huge differences in rates of population change, from massive population growth rates to a gradual decline in population. There are some countries in the world today, where the rate of population change is extremely low and such a situation can occur for a number of reasons. When one reads of population growth or decline, it is impossible to avoid discussion of China's one child policy. However, this policy is an extreme violation of human rights and is limited to just one country and so should not form the basis of a discussion of population growth rates or as an example of a country with low growth rates. Instead, it seems apt to concentrate on those countries where government influence is not so draconian or tyrannical. Italy is one country with a negative rate of population change and does provide an example of many reasons why this situation can occur. Following the Second World War, Italy experienced a rapid process of industrialisation, geographically concentrated in the North, given Italy's current level of development and its late beginnings, it is simple to imagine how quickly the process occurred, as this graph, taken from www.thetimes.co.uk, shows. This development gave the citizens of Italy much improved health care provision, which in turn
Causes and Effects of Migration
Causes and Effects of Internal and External Migration Migration is the movement of people from one place to another. We can divide it into two different parts. Internal migration which is rural(towns) to urban(cities). For example, Oakham to Manchester and external migration also can be said as international migration which is the movement from one country to another. For example, Turks to Germany or Mexicans to USA which I am going to talk about it as we go on. People migrate for two reasons. Firstly, they may wish to get away from the things that they do not like. These are called push factors and include:- * not enough and poorly paid jobs * old and poor quality houses * natural disasters - earthquakes, volcanoes, wars * few oppotunities - shopping centers, cinema, food, schools, hospitals * poor transport Secondly, people are attracted to the things that they do like. These are called pull factors and include:- * more and better paid jobs * new and good quality houses * better education - more oppotunities * improved medical care * better transport Now I am going to talk about the rural-urban migration in Britain. During the Industrial Revolution of the nineteenth century, many people in Britain were either forced to leave the countryside caused by push factors or attracted to the growing towns caused by the pull factors. Between about 1930 and 1980 there
Major Causes of French Revolution
The Major Causes of the French Revolution The French revolution overthrew the country's ancient monarchy, proclaimed Liberty, Equality and Fraternity and fought off a hostile Europe. It ushered in a new age, but at a terrible price in blood and human suffering. There were many causes of the Revolution. The French Revolution appears to have been the outcome of both long term and short term factors, which arose from the social and political conditions and conflicts of the ancien regime. The long standing grievances of peasants, townsmen and bourgeoisie; the frustration's of rising hopes among wealthy and 'middling' bourgeoisie and peasants; the distress and breakdown of government; a real (or at least perceived) 'feudal reaction'; the stubbornness of a privileged aristocracy; the creation of radical ideas among wide sections of the people; a sharp economic and financial crisis; and the successive triggers of state bankruptcy, aristocratic revolt and popular revolution: all these factors played a part. The middle and lower class were becoming more conscious of their increased social importance and because the peasants were becoming more independent, more literate and prosperous that the old feudal freedoms and aristocratic privileges appeared all the more burdensome and intolerable for the struggling discontents of France. For more than one hundred years before the accession
The causes of world war one
This is a map of Europe before 1914, as you can see the Austro-Hungarian Empire dominates what is now much of southern Germany and the Balkans. Germany is what we know presently as northern Germany and Poland. You may also have noticed that England, Scotland, Wales, and Eire made up the United Kingdom. Russia has a vast empire, a massive army (even though it is extremely poorly equipped, and trained). This was all changed by the First World War. The causes of world war one There are many reasons as to why the First World War actually took place, hardly any of them seem of great consequence when examined individually, however when examined together they do seem fairly major, but in my opinion don't merit a world war. Germany and France had a great rivalry after the wars of 1871 in which France lost the colonies of Alsange and Coraing to Prussia. France and it's people bitterly wand to have their revenge over Germany. Great Britain and Germany were also engaged in a hostile race to have the larger navy. This was heightened when Britain released a fleet of dreadnaughts which were the most lethal ships of warfare that the world had ever seen. The five major powers Great Britain At the start of the twentieth century Great Britain had the richest and largest empire in the world. Britain had the most trade and the largest navy on the planet. This had all happened under the
Explain the possible causes of inflation
Inflation in an economy is defined as the sustained increase in the general price level, resulting in a decrease in purchasing power of consumers and a fall in the value of money. Some inflation is vital for the macro economy in order to maintain adequate levels of economic growth, and since 1997, the UK government has recognised this fact by allowing The Bank of England Monetary Policy Committee to target a rate of 2.0% over the past fifteen years or so. The measure currently used by EU countries, including Britain, is that of the CPI (Consumer Price Index). This takes a weighted, indexed mean of a basket of goods deemed to be most influential in current household spending across the country. Other measures include the RPI and RPIX (the RPI, excluding mortgage interest repayments, as these fluctuate too readily). The UK has preserved one of the lowest inflation rates among EU countries in recent years, due to a thorough understanding of the causes of inflation and the policies necessary to manage it. On a microeconomic level, inflation can arise from the domestic economy. For example, major energy providers may decide to put up prices in line with projections for the year ahead, or monopolistic supermarket chains could engage in pricing wars, often to the detriment of the consumer and the pocket inflation they experience. Government VAT increases to fund its budget deficit
What were the causes of the 1905 Revolution in Russia?
What were the causes of the 1905 Revolution in Russia The causes of the Russian revolution of 1905 can be divided into three areas: Long term causes, short term causes and immediate causes. The problems that caused the revolution began years before it actually happened. Many of the national groups that lived within Russia resented the government's policy of 'Russification' as they saw it was trying to attack their way of life. Most children were forced to learn Russian in school and many Russian officials were chosen to fill non-Russian positions in local government. Most of the traditional customs were banned and the people had to obey Russian customs. The peasants also had been caused much suffering by the government. They had been released from Serfdom in 1861 and had been allocated land with which to farm and earn money. They could get loans from the government. However most of the peasants had to pay these loans off over a long period of time. As a result most of the peasants got into heavy debt. This was made worse by the fact that after 1861 the landowners had large estates. Many of the peasants were forced to work on the estates of nobles so they could earn extra money. However more and more people were becoming peasants as the population of Russia increased by 50% between 1860 and 1897 with more and more peasants competing with each other for the
What causes feedback in a guitar or microphone?
What causes feedback in a guitar or microphone? Just for the record, feedback is actually the mechanism used to control almost every electronic device manufactured. Stability is a critical issue for all of these feedback control systems, and the gain, or level of amplification, used is a critical element in their design. When musicians talk about feedback, however, the connotation is negative because it is the term they use to describe the shreek that results when the gain is too high on the output of an amplified instrument or microphone. There are several potential mechanisms by which feedback can occur when sound is amplified. Let's deal first with the simple case of a microphone and an amplified speaker. (See the figure, but ignore the guitar for now.) Feedback occurs when a "loop" between an input and output is closed. In this scenario, the microphone serves as the input and the amplified speaker provides the output. In our example, the loop between the input and output closes when the sound radiated from the amplified speaker reaches the microphone and is subsequently amplified again. In effect, the cat is chasing its tail. (See the dashed red line connecting the loudspeaker to the microphone through acoustic feedback in the figure.) Gain is an important factor in this instance; it also explains why equalizers are frequently employed to control acoustic feedback. The
