Natural Disasters We have all seen the awful effects of a flood or an earthquake - if we’re lucky only on the news. About 75 percent of the world’s population live in areas affected at least once by earthquake‚ tropical cyclone‚ flood or drought between 1980 and 2000 (Reducing Disaster Risk UNDP report‚ 2005). What causes natural disasters? First we need to get a bit technical. Natural hazards and natural disasters may sound like the same thing but there is a small but vital
Premium Natural disaster Emergency management Hazard
NATURAL VEGETATION Natural vegetation refers to a plant community which has grown naturally without human aid and has been left undisturbed by humans for a long time. This is termed as virgin vegetation. Thus‚ cultivated crops and fruits‚ orchards form part of vegetation but not natural vegetation. Virgin vegetation -The virgin vegetation‚ which are purely Indian are known as endemic or indigenous species but those which have come from outside India are termed as exotic plants. Flora- The term
Premium India Plant Tropical rainforest
Impact on the ecosystem Impact on wildlife In a study on the impact of tourist vehicles on the Maasai Mara Reserve in Kenya carried out in 1990‚ it was discovered that for the cheetah‚ it rarely fed during peak driving hours; furthermore‚ it waked off when any vehicle approached closer than 21 meters. When the lion was investigated‚ its peak feeding hours was when the tourists’ vehicles went back to their lodges for launch or to rest; it also fed early during the morning and late during the evening
Premium Masai Mara Kenya Tourism
A BigBench Implementation on the Hadoop Ecosystem Badrul Chowdhury‚ Tilmann Rabl‚ and Hans-Arno Jacobsen Middleware Systems Research Group University of Toronto badrul.chowdhury@mail.utoronto.ca‚ tilmann.rabl@utoronto.ca‚ jacobsen@eecg.toronto.edu http://msrg.org Abstract. BigBench is the first proposal for an end to end big data analytics benchmark. It features a rich query set with complex‚ realistic queries. BigBench was developed based on the decision support benchmark TPC-DI. The
Premium Data Data mining SQL
A natural disaster is a major adverse event resulting from natural processes of the Earth. A natural disaster can cause loss of life or property damage. Earthquakes Earthquake is the result of a sudden release of energy in the Earth’s crust that creates seismic waves. At the Earth’s surface‚ earthquakes manifest themselves by vibration‚ shaking and sometimes displacement of the ground. Floods The most common type of flooding event typically occurs when waterways such as rivers or streams overflow
Premium Precipitation Earth Volcano
An ecosystem is a community of living organisms (plants‚ animals and microbes) in conjunction with the nonliving components of their environment (things like air‚ water and mineral soil)‚ interacting as a system. These biotic and abiotic components are regarded as linked together through nutrient cycles and energy flows. As ecosystems are defined by the network of interactions among organisms‚ and between organisms and their environment‚ they can come in any size but usually encompass specific‚ limited
Premium Ecosystem Ecology Food chain
TOK Essay Natural Sciences - How far do expectations influence observations? Alysia Francis In my opinion I believe that expectations influence or observations greatly. If we think something will happen we are more likely to look hard for it. If we want something to appear then it is more likely that we will think that we see it. An example of this is when people hallucinate. Someone is more likely to see a ghost if they believe or are expecting to see one. In natural sciences when looking
Premium Science Social sciences Nature
Pollution on Ecosystems and Human Well-Being Exploring the links between ecosystems and human well-being‚ this article looks at the effects of industrial pollution on water quality and their impacts. Informed by a recent UNEP report “Clearing the Waters: A focus on water quality solutions”‚ released on World Water Day‚ 22 March‚ 2010‚ and also by other UN reports‚ the article highlights pathways to arrive at the sustainable management of human activities and processes within ecosystems‚ for improved
Premium Water Water supply Water quality
Biotic and Abiotic Influences on Ecosystems Term Definition Abiotic Factor Non-living factor that affects and ecosystem Biotic Factor Living factor that affects an ecosystem Carrying Capacity Maximum amount of organisms an ecosystem can support Commensalism Relationship where one organism is benefitted while the other is unaffected Competition Relationship where the organisms compete for the same services of the environment Density Dependent Factor Factor that depends on the original
Premium Ecology Biology Biotic component
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