Guess Paper – 2012 Class – X Subject – Science Time :90 minutes Set (03) M.M :40 Note : all questions are compulsory . Section A Q.1 By what other name is the unit coulomb × volt ? 1 Q.2 What do the symbols { } { } mean in electric circuit? Q.3 Balance the reaction CuO + HCl → CuCl2 + H2O Q.4 Name the process in which plants release CO2 . Q.5 what is displacement reaction? Give an example of is displacement reactions? Q.6
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Consists of: 78% nitrogen‚ 21% oxygen‚ 1% (water vapour‚ CO‚ argon) 3. I couldn’t fiind anything in thee entiree book forr thiis question -.- 4. Primary producers are those organisms in an ecosystem that produce biomass from inorganic compounds (autotrophs). (ex: Plants and bacteria) Primary Consumer: An herbivore is an animal that is adapted to eat plants. (ex. Butterfly‚ rabbit‚ squirrel) Secondary Consumer: a consumer that gets its energy from other consumers. These are often called carnivores
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AP BIOLOGY EXAM ESSAY (FREE RESPONSE) QUESTIONS General directions: Answers must be in essay form. Labeled diagrams may be used to supplement discussion‚ but in no case will a diagram alone suffice. It is important that you read each question completely‚ and answer each section of the question. When giving examples‚ the first ones you give will be the ones graded. (if two examples are asked for‚ and you write about 4‚ make sure the first two are the best ones; they are the only ones counted
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Evaluate economic and environmental issues involved with farming practices that increase productivity. Farming is considered by many as the first major step towards civilisation. Without it we would all still be hunter-gatherers. Over the millennia farming has become steadily more efficient and productivity has increased. Better productivity is constantly sought after in an effort to reduce losses so more money can be made. Better productivity is defined as an increased rate of biomass creation
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only one variable is changed. 3. If the plant you are experimenting with has a disease that is an unavoidable experimental error. 4. An enzyme speeds up reactions and lowers the energy it takes to produce something‚ a lock and key. 5. Autotrophs make their own food by producing sugars from sunlight and various chemicals. 6. Abiotic factors are factor that are nonliving‚ such as the air‚ sunlight and the temperature. Biotic factors are living factors like birds‚ trees and fish.
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The animal I have chosen is the Addax. In my new enclosure for the Addax‚ there will be many features that not only imperative for the survival of the Addax but it will be comfortable so the Addax in the enclosure will feel at home. The enclosure will feature a place for feeding‚ sleeping and a place for social interactions with the other addaxes inside the enclosure. Not only will the enclosure be beneficial for the Addax but also for the public as there will be several viewing areas. These viewing
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Answer the following questions to be word-processed and turned in. Write the overall general chemical equation for photosynthesis. (use light energy) 6CO2+ 6H2O C6H12O6 + 6O2 Explain the overall importance of photosynthesis to plants. Plants are autotrophs that they make their own food. Photosynthesis is how plants feed themselves. Explain the overall importance of photosynthesis to the living world. Through the process of photo synthesis‚ plants use solar energy to convert CO2 and H2O to sugars
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Kingdom Animalia: Mammals‚ Insects‚ Birds‚ and Echinoderms [YOUR NAME HERE] [CLASS SUBJECT HERE] [PROFESSOR’S NAME HERE] June 1‚ 2008 With the omission of both prokaryotes and protists‚ Kingdom Animalia generally contains all sorts of animal species. It is estimated that anywhere from nine to ten million exist on Earth – the exact number is not precisely known. Kingdom Animalia includes the following species: mammals‚ insects‚ birds‚ echinoderms‚ and etcetera. This
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INTRODUCTION TO ECOLOGY I. Definition - Greek words: oikos = family household logy = study of by Ernst Haeckel in 1866 - 1866 Ernst Haeckel: the comprehensive science of the relationship of the organism to the environment - 1927 Charles Elton: scientific natural history - 1963 E. P. Odum: the study of the structure and function of nature - 1972 C. J. Krebs: the scientific study of the interactions that determine the distribution and abundance of organisms To summarize: - Scientific
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Evolution as a theory * Theory- in science‚ a well substantiated explanation of some aspect of the natural world Evolution- the accumulation of inherited genetic changes within populations over generations * Does not refer to changes that occur in an individual within its lifetime * Not limited to speciation that may only occur over long periods of time * Can occur over a few generations‚ and is most commonly expressed as an adaptation to a changing environment or the change in allele
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