Feeding the World in 2050 The current world population is approximately 7 billion and it is estimated to increase to around 9 billion by the year 2050. However the land area available for growing food doesn’t seem to increase much due to the land degradation. If we don’t do anything‚ this world will be lack of foods‚ water and resources which means it will never be the same as now again. So‚ throughout this essay‚ I will be explaining about the causes of these problems and the possible solution
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Hydroponics As the world’s population grows exponentially‚ modern agricultural practices must focus on sustainability‚ to produce food while making efforts to maintain the environment. In order to produce more food for the growing population‚ producers have increased their use of viable agricultural lands resulting in 11% of earth being tilled for agriculture. While this number seems to be relatively low‚ it must be addressed that this 11% usage takes up almost all of the world’s land than can
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culture’. If no medium is present and the plant roots are bathed in circulated nutrient solution‚ the method is called ‘hydroponics. If no medium is present and plant roots get their nutrients by frequent spraying or misting‚ the method is called ‘aeroponics’. The method we are concerned with in this article uses solid growing media. Figure 1. Different soilless cultivation methods. Soilless culture characteristics The limited volume of medium and water availability generally causes rapid changes
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Low Cost Green Houses for Vegetable Production Agriculture is the backbone of India’s economic activity and our experience during the last 50 years has demonstrated the strong correlation between agricultural growth and economic prosperity. The present agricultural scenario is a mix of outstanding achievements and missed opportunities. If India has to emerge as an economic power in the world‚ our agricultural productivity should equal those countries‚ which are currently rated as economic power
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Tick (v) if it is a true statement. Chapter 2 Cell Structure and Cell Organisation 1. The cell is the basic unit of life for all organisms. 2. All cells have the same shape and size. 3. All cells have a plasma membrane‚ nucleus and cytoplasm. 4. Protoplasm consists of a plasma membrane and nucleus. 5. The nucleus consists of chromosomes and a nucleolus. 6. Organelles that are found in the cytoplasm of a cell include the nucleus‚ vacuole‚ endoplasmic reticulum‚ mitochondria and Golgi apparatus.
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[Type the company address] [Type the company address] Chemistry Hydroponics EEI Cody Yakimoff Year 11 – Mrs Bev Gallus Chemistry Hydroponics EEI Cody Yakimoff Year 11 – Mrs Bev Gallus 08 Fall 08 Fall “Gardening is not a rational act” ~ Margaret Atwood (Canadian poet‚ essayist‚ environmental activist) “Gardening is not a rational act” ~ Margaret Atwood (Canadian poet‚ essayist‚ environmental activist) INTRODUCTION 4 RESEARCH 5 AIM 6 HYPOTHESIS 6 RESEARCH INTO RELEVANT
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Unit One: Animal Structures and Functions‚ Answers to Review Questions Respiratory System 1. Indicate the importance of gas exchange in all living organisms. Respiration is gas exchange (Oxygen and Carbon Dioxide) with the external environment. All living things respire. Gas exchange is important so that cellular respiration can take place and energy can be made for the cells. 2. Distinguish among the terms cellular respiration‚ external respiration and internal respiration
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w w w e tr .X m eP e ap .c rs om June 2003 GCE A AND AS LEVEL MARK SCHEME MAXIMUM MARK: 40 SYLLABUS/COMPONENT: 9700/01 BIOLOGY Paper 1 (Multiple Choice) Page 1 Mark Scheme A/AS LEVEL EXAMINATIONS – JUNE 2003 Syllabus 9700 Paper 1 Question Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Key D A C C A C D A B A B C B C D A D A C C Question Number 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 Key D B B A C C B B C D A C C D B B D B B C
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A Glossary of Ecological Terms transpired by Craig Chalquist‚ PhD‚ ecopsychologist and author of Terrapsychology: Re-engaging the Soul of Place (2007) - See also "Mind and Environment: A Psychological Survey of Perspectives Literal‚ Wide‚ and Deep." - Never‚ no never‚ did Nature say one thing and Wisdom another. – Edmund Burke The glossary that follows assumes a definition of ecology--the study of interactions between organisms and their environment--much wider than what fits under the
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