Explain why Rainforests are fragile ecosystems under threat Human beings are the biggest threat to the rainforest ecosystems due to the exploitative nature of our industrial society. As the NIC’s with rainforests in have begun to develop they found the economic value of the rainforests for many international markets as well as internal infrastructure; the resources available are priceless. Logging companies are granted forestry rights‚ usually cheaply‚ to harvest timber to sell abroad for furniture
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these organisms were related‚ but not identical. This led Darwin into believing that over time‚ organisms must adapt to suit their environment. He explained his theories thoroughly in his book‚ On the Origin of Species by Means of Natural Selection. Darwin decided it was possible for a species to change from one form and develop into another over time. This led him to the notion that all life forms were not fixed‚ but continuously changing or evolving. The other part of the theory was that living things
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These components affect living organisms in many ways. Some of the soluble components and emulsions are poisonous‚ particularly to small organisms that do not have protective coverings or shells- Fish larvae‚ single celled algae and many kinds of plankton are vulnerable and these are the basic foundation of the marine food chain. In shallow water these toxic substances may directly kill algae‚ coral and sea grasses. These components may also be passed in the food chain or directly ingested or absorbed
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Earthquake‚ shaking of the Earth’s surface caused by rapid movement of the Earth’s rocky outer layer. Earthquakes occur when energy stored within the Earth‚ usually in the form of strain in rocks‚ suddenly releases. This energy is transmitted to the surface of the Earth by earthquake waves. The destruction an earthquake causes depends on its magnitude and duration‚ or the amount of shaking that occurs. A structure’s design and the materials used in its construction also affect the amount of damage
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Ecosystems: Change and Challenge The Structure of Ecosystems Ecosystem: a dynamic‚ stable system characterised by the interaction of plants and animals with each other and with the non-living components of the environment The components of an ecosystem are categorised as either biotic and abiotic Biotic means the living environment‚ components include: i). Vegetation (living and decomposing) ii). Mammals‚ insects‚ birds and microorganisms Biomass-the mass of material in the bodies
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The Amazon is the largest tropical rainforest on Earth. It covers over 1.4 billion acres of land. About two and half million different insects and 40000 plant species live in the Amazon. Location • South of the equator • 3.1600° S and 60.0300° W • Stretches across 9 different countries in South America The abiotic factors in the Amazon Rainforest are important because they affect the plants and animals that live there. Without these factors trees and plants would not be able to
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use in your essay. Why do Natural disaster occur : here you can include the reasons why natural disaster occurs. the reasons could be both man made and natural. i said man made because there is a theory called "Population theory of Malthus " where its stated that if the balance of population exceeds that of food supply many natural disaster would occur. you can google "Population theory of Malthus" for more details. and the natural ones could be earthquakes on which humans have no control. here
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* Charles Darwin Origin of species by natural selection Theory of natural selection 1. Over production More offspring are produced than can survive 2. Variation There are differences in the traits of these organisms 3. Competition 4. Best adapted survive select agent 5. Reproduce Pass on desirable traits to the next generation Organisms rarely have mutations that can allow the to better adapt to there envirironment. I. Evidence for evolution A. Fossils Remnants of organisms that
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Introduction A natural calamities is a major adverse event resulting from natural processes of the Earth; examples include floods‚ volcanic eruptions‚ earthquakes‚ tsunamis‚ and other geologic processes. A natural disaster can cause loss of life or property damage‚ and typically leaves some economic damage in its wake‚ the severity of which depends on the affected population’s resilience‚ or ability to recover. List of natural calamities 1) Earthquakes 2) Volcanic eruptions 3) Hydrological disasters
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Instinct Species in “Jurassic Park” When we hear about cloning in the media‚ they are usually referring to reproductive cloning‚ human cloning in particular‚ and it’s scientific and ethical implications. In Jurassic Park‚ John Hammand‚ who is a rich entrepreneur‚ hires a group of scientists to clone dinosaurs from the Jurassic Period. The ethical dilemma presented in Jurassic Park is whether we should use our knowledge of cloning to revive an extinct species that ceased to exist through natural processes
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