Topic 2: The Ecosystem 2.1.1 Biotic: living factors or components‚ e.g. plants and animals. Abiotic: non-living factors or components‚ e.g. soil‚ water‚ wind‚ etc… 2.1.2 Trophic level: is the position that an organism or a group of organisms in a community occupies in a food chain. 2.1.3 A food chain shows the flow of energy from one organism to the next. A food web is a complex network of interrelated food chains. Producers (autotrophs): manufacture their
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Embryos Survive Stem Cell Harvest Pg. 2 Embryos Survive Stem Cell Harvest Pg. 2 Prevent skin cancer cause by the UV rays with the new Eucerin sun block cream protector Prevent skin cancer cause by the UV rays with the new Eucerin sun block cream protector November‚ 2012 issue November‚ 2012 issue The CELL-O Magazine by mariana carroll and esteban cruz The CELL-O Magazine by mariana carroll and esteban cruz Pg 4 How to prevent cancer? There are a lot of ways to
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the above e. A and B only Question 4 B. Correct Mark 1 out of 1 Flag question Question text Which of the following is not true of decay bacteria? Select one: a. Break down waste products and dead organic matter b. Carry out photosynthesis c. Are heterotrophs d. Are particularly abundant in bottom sediments e. Ensure the recycling of essential nutrients Question 5 E. Correct Mark 1 out of 1 Flag question Question text Bacteria that make their own organic compounds
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serve to anchor the tree and extract moisture and nutrients from the soil. Above ground‚ the branches divide into smaller branches and shoots. The shoots typically bear leaves‚ which capture light energy and convert it into chemical energy by photosynthesis‚ providing the food needed by the tree for its growth and development. Flowers and fruit may also be present‚ but some trees such as conifers instead have pollen cones and seed cones‚ and others such as tree ferns produce spores instead.
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environmental extremes through specific defense mechanism [3]. The most important contributions leaves make to our planet’s ecosystem are through their processing of oxygen and carbon dioxide. Oxygen‚ though a waste product of photosynthesis is essential to plant‚ animal‚ and human survival. As leaves break down carbon dioxide and release oxygen‚ they also help determine global climate patterns [4]. On the other side‚ a block is a molded rectangular brick
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The Carbon Cycle The element Carbon is the principle block for the organic compounds that make up life. This is because the study of the Carbon Cycle draws upon theories from biology‚ chemistry‚ geology and oceanography in order to understand the movement of carbon throughout the atmosphere‚ hydrosphere‚ and geosphere. Carbon is made up of four electrons that are able to form with each other; this causes the many different forms of carbon. The most popular form of carbon is carbon dioxide; this
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the solute. The tube containing Nitrogen has a very small and weak stem‚ and the tube containing Magnesium successfully grew large green leaves‚ supporting scientific evidence of plants using magnesium for chlorophyll production [later used in photosynthesis]. The tube containing Calcium had stunted and minimal stem and root growth‚ and barely grew at all over the week period. The orange plant in Figure 1 shows darker lines along the middle of the leaves‚ with dark lines branching out. The edges
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a shrub have a higher stomatal index (/density) than those taken from the centre of a shrub this are due to light levels. Explanation: Plants have stomata to obtain carbon dioxide from the atmosphere and remove oxygen produced in photosynthesis. During photosynthesis the chloroplasts in the leaf cells synthesize as a result of exposure to light‚ while oxygen is produced as a by-product. As the outer leafs are exposed to higher light levels the stomatal density has to be high and because the inner
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organisms and the environment through biochemical cycles Carbon Cycle In the form of CaCO3 component of animal skeletons and found in several kinds of rocks Carbon and oxygen form carbon dioxide CO2 Carbon dioxide is taken in by plants during photosynthesis and is given off by both plants and animals during respiration 4 main processes move carbon through its cycle Biological processes- respiration‚ decomposition—take up and release carbon and oxygen Geochemical processes
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Nutrients | - | Temperature | - | Humidity | - | Wind | - | Gravity | - | Day length | - | Space to expand | - | Appropriate environmental setting | - | THREE MAJOR three major functions that are basic to plant growth and development Photosynthesis – The process of
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