Earth and due to volcanic activity‚ there as an emission of gases‚ or out-gassing‚ of volatile molecules‚ such as water (H2O)‚ methane (CH4)‚ ammonia (NH3)‚ hydrogen (H2)‚ nitrogen (N2)‚ and carbon dioxide (CO2). - Environment was anoxic (no free oxygen) = no ozone layer‚ earth exposed to high solar radiation (UV) - Early Earth = atmosphere of water vapour‚ hydrogen‚ methane and ammonia making production of organic carbon-containing easier. - energy for driving these reactions could have come from
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Earth Science Ecology Group 11 Objectives: * To define Ecology * To differentiate abiotic and biotic components of the ecosystem. * To identify the different types of ecosystem. * To know the different elemental cycles * To understand the importance of the natural habitat and the effects of migration. * To know have an overview of what is food chain and food web * To differentiate renewable from non-renewable resources * To know what is population‚ migration
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PHOTOSYNTHESIS (How do the light dependent and light independent reactions provide food for a plant?) Why? How important are plants to life on Earth? Could life as we know it continue if there were no plants? Read on the find out why plants are truly the cornerstone of life. Model 1: An Overview of Photosynthesis and Chloroplast Structure 6CO2 + 6H2O C6H12O6 + 6O2 Site of the Calvin cycle‚ or light independent reactions 6 H 2O + 6 CO2 Contains chlorophyll. This is the site of the light dependent
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It isn’t blazing in flames like the Sun‚ or composed of rock and ice like Pluto‚ Earth has water‚ trees‚ and rotates around the sun for heat. It is almost as if Earth were tailored when created to fit human need’s‚ we drink water and breathe its oxygen to survive‚ we use its plants for various reasons‚ from eating them‚ to making remedies‚ to smoking them etc. Knowing that Earth is a special planet‚ you would think that its habitants would take better care of it right? So that future generations
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nitrosamines can cause cancer (Mygind‚ 1991). Furthermore‚ in our blood there is a reaction between nitrite and haemoglobin. Nitrite can oxidise the haemoglobin in the blood to methaemoglobin which is incapable of binding with oxygen and therefore can’t transport oxygen from the lungs to the rest
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of nature. They are known as the best friends of human beings. They benefit us in various ways. The lives of men and other animals and insects are inconceivable without the existence of trees in the world. Trees absorb carbon dioxide and give us oxygen without which no living being can live. Trees give us shade‚ medicine‚ food‚ fruits‚ furniture‚ fuel etc. Trees also keep the weather cool and cause rainfall. They also bind soil and thus prevent erosion. The land of Bangladesh is suitable for the
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breaks it down into smaller molecules that can be absorbed into the bloodstream. Cells can then use the molecules for their maintenance. The respiratory system takes in oxygen from the atmosphere and then passes it into the bloodstream in order for it to be delivered to all the cells in the body. The circulatory system delivers the oxygen to all the cells but is also picks up the carbon dioxide and waste from the cells. The carbon dioxide is taken back to the lungs. The carbon dioxide is diffused from
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to find some bigger molecule to latch on to in order to leave the confines of the liquid‚ and trapped oxygen molecules within the container provide an excellent mode of transportation. When a carbonated liquid is mixed with all the other molecules in the container‚ for example‚ by being shaken‚ the carbon dioxide in the liquid uses the oxygen molecules to escape‚ so minimizing the amount of oxygen within the opened container may be paramount to
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the sun’s energy and chlorophyll found in chloroplasts in the green leaves of plants‚ to turn inorganic carbon dioxide into glucose (sugar) to make oxygen which we all need to live. So‚ when animals eat the plants‚ and take the carbon in the sugars‚ inside their cells they take the energy from the food‚ this is cellular respiration‚ which takes oxygen (product of photosynthesis) and makes carbon dioxide (also used in photosynthesis) ‚ it then gives energy by breaking down the food molecules‚ this
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(hydrocarbon) • require O2(g) as a reactant • produce CO2(g) and H2O(g) and a large amount of energy!! Oxygen can be the limiting reagent which can lead to Incomplete combustion. For complete combustion of a hydrocarbon‚ oxygen must be in excess. If there isn’t sufficient oxygen‚ incomplete combustion occurs and carbon monoxide is produced instead of carbon dioxide. methane oxygen carbon monoxide carbon water Balance this symbol equation for incomplete Balance this symbol equation for incomplete
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