THE IRISH POTATO FAMINE Pre-Famine History The potato was introduced to Europe sometime in the 16th century. There are many theories on how it arrived‚ but the one with the most credibility is from a case study done by Theresa Purcell. She explains how the white potato‚ also known as the Irish potato‚ originated in the Andean Mountains and was brought to Europe by the Spaniards. The potato was originally classified in the same family as the poisonous nightshade so people refrained from eating
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Question 1: How does Osmosis works It refers to the movement of water molecules from an area of high-level water concentration‚ that is‚ a dilute solution‚ to an area of low-level water concentration‚ that is‚ a strong solution through a semi-permeable membrane. (Passmyexams.co.uk‚ 2015) Actually‚ water moves in a bi-directional manner with the aim of leveling up the concentration. However‚ a high number of water molecules move from the fresh water towards the salty water. The outcome
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In the early 1800s life in Ireland wasn’t easy‚ Irish citizens got by day to day by farming and relying on the potato. The potato was their main source of food and money. With out the potato the Irish would have nothing. No one was prepared for what was about to happen in 1845‚ the beginning of the Great Irish Potato Famine. The Irish Potato Famine was the worst tragedy in the history of Ireland. The outcome of the famine would result in hundreds of thousands dead‚ an failure of the economy
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even though the poet and his mother are having a good time peeling potatoes‚ his mother is ill and they are brought to their senses that the happy times will soon be brought to an end. 2. The potato is an important symbol in Ireland because of its value as a food staple and reminder of the terrible potato famine in the 19th century. What personal symbolic value does it have in this poem? In this poem the potatoe is a symbol of time shared with the poets mother‚ time when it is just him and his
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Introduction In chemistry‚ substances require a certain amount of energy in the form of average kinetic energy (temperature) to freeze. To reach the temperature a substance requires to freeze‚ it must lose a certain amount of heat energy (a form of energy transferred from one object to another‚ because of a temperature difference). When a substance reaches its freezing point and begins to freeze‚ its temperature remains constant until it is completely frozen. However‚ in order to melt a substance
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Introduction A. Background of the study Due to the overwhelming demand of plastic bag production and its effects on our environment‚ our landfills are crammed with these non biodegradable materials. Substances used in the manufacturing brought forth various harmful chemicals which worsen over time. As the destructive compounds such as Chloroflourocarbon were introduced‚ the complete deprivation of the Ozone Layer starts. However‚ scientists and nature preservers alike managed to overthrow this
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Introduction: In this experiment I aim to investigate the effect of the surface area to volume ratio on the rate evaporation of water in different sized containers. By measuring the time it takes for the whole amount of water to evaporate‚ a conclusion can be made about the validity of the surface to volume ratio in regards to the biological process of diffusion. Research Question: What is the effect of the surface area to volume ratio on the evaporation of water? Variables: - Independent:
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Potato Enzyme Lab Enzymes are protein catalysts that speed up chemical reaction in living organisms. The purpose of this lab was to; observe the breakdown of hydrogen peroxide toxin by potato’s enzyme catalase‚ determine factors that influence how quickly the reaction takes place‚ and determine factors that influence how well enzymes function. The first test‚ we were supposed to see what would happen when we add sand in hydrogen peroxide. We filled a test tube with 5mL hydrogen peroxide and we added
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AIR POLLUTION What is Air Pollution? Pollution is now a common place term‚ that our ears are attuned to. We hear about the various forms of pollution and read about it through the mass media. Air pollution is one such form that refers to the contamination of the air‚ irrespective of indoors or outside. A physical‚ biological or chemical alteration to the air in the atmosphere can be termed as pollution. It occurs when any harmful gases‚ dust‚ smoke enters into the atmosphere and makes it difficult
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Lab 5: Osmosis Purpose: The purpose of this lab is to familiarize you with osmosis and‚ specifically‚ what happens to cells when they are exposed to solutions of differing tonicities. Hypothesis: If we add higher concentrations of sugar to the dialysis tubing‚ then the net movement of coffee into the dialysis tubing will increase. Materials scale or balance 24" dialysis tubing 4 transfer pipets sugar scissors rubber bands four coffee cups - they need to be roughly the same size
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