F3.3 – LIMITING FACTORS • a factor that causes popn growth to decrease • two basic types: 1. density-independent factors 2. density-dependent factors 1. Density-independent factors • an abiotic event that affects all popn’s in the same way‚ regardless of popn density • e.g. fires‚ earthquakes‚ storms‚ temperature extremes… 2. Density-dependent Factors • a biotic interaction that varies in its effect on popn size‚ depending on the density of the popn involved • have greater impact on denser popn’s
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Flowers and Acid Call them freaks‚ the underground‚ the counterculture‚ flower children‚ or just simply hippies‚ they are all loose labels for the youth culture of the 60’s that transformed life in the West as we knew it‚ introducing the spirit of freedom‚ of hope‚ of happiness‚ of change‚ and of revolution (Miles 9). The years that made up the 1960’s were some of the most exciting and turbulent years in American history. The post World War II baby boomers grew up. A president and
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positive or negative self-efficacy in teaching? 3. What factors did teachers identify as influencing their professional self-efficacy in teaching”? The research questions centered around teachers’ perceptions of how self-efficacy influences the academic achievement of their students‚ on what personality characteristics they feel teachers add to their positive or negative self-esteem in teaching‚ and on what factors they identify as influencing their professional self-efficacy in teaching. Accordingly
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analyze data and draw a conclusion. In this experiment I will find out that in a type of water the Alka-Seltzer will dissolve faster and slower. Alka-Seltzer is one of the world’s best known antacids. Its main function is to absorb excess stomach acid. II. MATERIALS: * Tap Water - Warm Water * Cold Water - Salt Water * Acidic Water -5 cups (250 mL of water in each cup) * A whole Alka-Seltzer tablet III. HYPOTHESIS: My hypothesis is that the Alka-Seltzer tablet
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Consumer behavior and factors influencing buyer behavior By Pyarimohan Mohapatra Consumer behavior is an attempt to understand & predict human actions in the buying role. It has assumed growing importance under market-oriented or customer oriented marketing planning & management. Consumer behavior is defined as “all psychological‚ social & physical behavior of potential customers as they become aware of‚ evaluate‚ purchase‚ consume‚ & tell others about product & services”.
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Where in the world is the Monteverde rain forest? Nestled atop Costa Rica’s continental divide‚ the Monteverde rainforest Proudly calls the town of Monteverde Its home. High above the coastal towns dotted Along the famous Costa Rican seaside‚ Monteverde sits at an altitude of 4‚662 Ft. above sea level. Major Abiotic Factors v Because of the high altitude‚ this particular rain forest is known as a Cloud Forest. v A Cloud Forest is categorized as a highland forest that receives nearly 100%
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Nitric Acid Nitric acid is an acid many people have come across in life. One may have felt nitric acid when touching fertilizers‚ or using dyes. Nitric acid appears in substances we never thing it would be used in. In fact‚ small contents of nitric is acid is found in raindrops that fall from the sky. Nitric acid‚ or known as NHO3aq is an acid formed from reaction of ammonia and oxygen. Nitric acid is a colourless acid when it’s pure‚ or can be found yellow or red. This acid can be very corrosive
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Acid in the human stomach When people refer to acid they usually see it as a corrosive liquid that can dissolve metals or change the color of a substance. So they think of acid as a dangerous matter for the body and believe it can easily dissolve your skin. What I have previously listed are indeed properties of certain acids‚ such as Hydrofluoric Acid which can cause irreversible tissue damage if it comes in contact with skin‚ but not all acids are this strong. As a matter of fact what a lot of
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9.1 Sulphuric Acid Sulphuric Acid is Manufactured in Industry 1. Sulphuric acid‚ H2SO4 is manufactured in industry through Contact Process. 2. The raw materials used are sulphur‚ air and water 3. The Contact process consists of three stages. Stage 1: The production of sulphur dioxide This can be obtained by two methods: 1. Burning of sulphur in dry air in the furnace S + O SO2 2. Burning of metal sulphide such as zinc sulphide or iron(III) sulphide in dry air. 2ZnS
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(Fe3+ ) form. Ferric form is not usually absorbed in the body. In the stomach‚ there is low pH of 2 due to presence of gastric acids such as Hydrochloric and Ascorbic acids. These acids provide an acidic environment for reduction of ferric iron to ferrous (Fe2+). Ferrous iron can be absorbed in the body system. As in following equation of iron (iii) reaction with Ascorbic acid ‚ the product is iron (ii) chloride which is soluble 2 Fe3+ (s) + C6 H8 O6 (aq) → 2 Fe2+ (aq) + C6 H6 O6 (aq) + 2 H (aq)+
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