Here is cbse 2007 question paper of science: CBSE X SCIENCE AND TECHNOLOGY (Theory) 2007 (OUTSIDE DELHI) Time allowed: 2 hours 15 mins; Maximum Marks: 100 General Instructions: | 1) | The question paper comprises of two sections A and B. You are to attempt both sections. | 2) | You are advised to attempt all the questions of Section A and Section B separately. | 3) | All questions are compulsory. | 4) | There is no overall choice. However‚ internal choice has been provided in some questions
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Animals to be classified: Hypocalymma Angustifolium‚ Hypocalymma Cordifolium‚ Xerochrysum Bracteatum‚ Xerochrysum Viscosum‚ Pteropus Poliocephulus‚ Petaurus Australis‚ Tachyglossus Aculeatus‚ Perameles Gunnii. Has roots‚ leaves and/or flowers? Yes (therefore Flora species) No (therefore Fauna species) Average height above 100 centimetres? Is the specimen nocturnal‚ its torso covered in fur? Yes No Yes Heart shaped leaves borne opposite each other and/or Newly grown stems
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are usually in the form of gases. These substances result chiefly from burning fuel to power motor vehicles and to heat buildings. Industrial processes and the burning of garbage also contribute to air pollution. Natural pollutants include dust‚ pollen‚ soil particles‚ (100 Words) and naturally occurring gases." (Encyclopedia) "The rapid growth of population and industry‚ and the increased use of automobiles and airplanes‚ have made air pollution a serious problem. The air we breathe has become
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Animals mate with each other based on mating calls‚ vibrant colors‚ size and several other physical traits. In contrast‚ Plants have the ability to both mate with other plants and mate with their selves. Plants can reproduce by pollination where pollen from one plant is moved to another by wind‚ animals or water. Some animals have
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Health Concerns Name of health problem that you are researching: ASTHMA Complete the following questions in your own words and in sentence form unless otherwise directed. 1. Briefly describe this disease. Asthma is a lung condition that causes difficulty breathing. 2. Name the human system(s) this health concern affects. Respiratory system 3. A) List the organ(s) and/or tissue(s) this health problem affects? B) Describe how the organ(s) and/or tissue(s) are affected by this health
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spring; love the colour‚ the flowers‚ the trees‚ and the lush effervescent greenery of it all. But if you’re even more like me‚ your enjoyment of this festival of life and growth may be occasionally curtailed by the inevitable contact with flecks of pollen spinning gaily through the breeze‚ transforming of your head into a leaky‚ red-eyed‚ sneezing ball of misery. Yes‚ I’m talking about hay fever. The time of the year when my life becomes an endless disarray of sleepless nights‚ burning eyes‚ and mucus
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History Of Spice Egyptians used a lot of spices for cooking and stuffed mummies Burned cinnamon to hide stench First recorded spice Traded spice with India Spice trade silk road All roads go to fertile crescent Arabs created a monopoly on the spice trade moving toward Europe Arabs Kept Europeans in the dark about the source of spices brought from India Created secrets and Myths Might boil seeds so Europeans couldn’t grow it Crusaders brought back new spices when they returned from battle
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to be prepared for the rapidly rising temps because society could face major health problems. People who suffer from allergies could be in jeopardy‚ while people who have difficulties breathing are at risk too. Higher temps increase the amount of pollen in the air leading to worsening allergies (Denchak).
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management of honey bees for obtaining honey‚ wax and other substances. 2. Bee-keeping needs low investments‚ so farmers use it as additional income generating activity. 3. Bee-keeping also helps in cross pollination of crops because honey bees transfer pollen grains from one flower to another while collecting nectar. 4. Local varieties of bees used for commercial honey production are Apis cerana indica known as Indian bee. Apis dorsata- the rock bee‚ Apis florae- the little bee. An Italian bee Apis mellifera
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There are messages in everything that falls within the category of social media. From books and newspapers to cartoons and movies‚ all forms of media contain a purpose‚ mainly to get the audience to believe a certain way. While some messages may be very obvious‚ such as a food commercial advertising a new hamburger‚ other messages may not be as clear. What does this result in? Subliminal messages. According to an online dictionary‚ Dictionary.com‚ subliminal is defined as “existing or operating
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