1. Indicators were identified with the observation that the colour of some flowers depend on soil composition Classify common substances as acidic‚ basic or neutral * An acid is a substance which in solution produces hydrogen ions‚ H+ or more strictly H3O+‚ sometimes called hydronium ions * A base is a substance which either contains the oxide O2- or hydroxide ion OH- or which in solution produces the hydroxide ion. * A soluble base is called an alkali Common properties of all acids:
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organism‚ including men. One party if this global environment is the natural system. There are three components of the natural environment. These are: 1. Atmosphere (Moisture‚ gas‚ dust etc.) 2. Lithosphere (Mineral‚ rocks‚ soil etc.) 3. Hydrosphere (Oceans‚ lakes‚ rivers etc.) Each of these environmental components has resources such as coal from the ground‚ fish from the rivers or crops from the soil that are utilized economically and ultimately marketed in some form. The living
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A microorganism (from the Greek: μικρός‚ mikros‚ "small" and ὀργανισμός‚ organismós‚ "organism") is a microscopic organism‚ which may be a single cell[1] or multicellular organism. The study of microorganisms is called microbiology‚ a subject that began with Antonie van Leeuwenhoek’s discovery of microorganisms in 1675‚ using a microscope of his own design. Microorganisms are very diverse and include all the bacteria and archaea and almost all the protozoa. They also include some members of the
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WTHESIS STATEMENT: “BIOCONVERSION OF WATER HYACINTH (EICHHORNIA CRASSIPES) TO ETHANOL.” 1. INTRODUCTION Water hyacinth (Eichhornia crassipes) is a free-floating or rooted in mud plant or weed which can totally cover fresh water lakes‚ harbors‚ and other essentially relatively occluded fresh water bodies. It is a fast growing permanent aquatic plant that are extensively scattered all throughout the world. This tropical plant can be the reason for the infestation over large areas of water resources
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REVIEWER FOR SCIENCE QUIZ BEE CONTESTANTS GRADE 7 1. A great Greek philosopher‚ he was the first person to study nature systematically. ARISTOTLE 2. He laid the foundation of modern scientific thought and assembled materials for an organized encyclopedia of all knowledge. ARISTOTLE 3. He was the foremost natural philosopher in ancient times. ARISTOTLE 4. A Benedictine nun‚ she contributed the medical work “Causea et Curae et Physica”. HILDEGARD OF BENGEN 5. An astronomer who proposed
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GEO 100 – Environmental Geology - Final Exam Multiple Choice 1. Most astronomers believe that the universe a. has existed in its present state since the beginning of time. b. formed from a huge rotating cloud of gas. c. came into existence as the result of a “Big Bang.” d. is no more than five billion years old. 2. Most of the mass of the solar system is concentrated in a. Jupiter and Saturn. b. Earth. c. the planets. d. the sun. 3. The solar system formed about a. 5 million years ago. b. 4.5 billion
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Young Discoverer Series UNIVERSE NICKNAMES OF PLANETS: Mercury – Speedy Messenger. Venus – Morning or Evening Star. Earth – The Blue Planet. Mars – The Red Planet. Jupiter – Jove or the Galilean System. Saturn – The Ringed Planet. Uranus – Father Sky. Neptune – The Windy Planet. Pluto – The Ice Planet. DEFINITIONS: STAR: A huge body made of hot luminous gas that is held together by its own gravity. Compared to other stars‚ our Sun is a star of average size and energy. PLANET: A large
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Climate change Climate change is a significant and lasting change in the statistical distribution of weather patterns over periods ranging from decades to millions of years. It may be a change in average weather conditions or the distribution of events around that average (e.g.‚ more or fewer extreme weather events). Climate change may be limited to a specific region or may occur across the whole Earth‚ such as global warming. Terminology The most general definition of climate change is a change
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impact on the water environment shall be defined as a cumulative manifestation of all kinds of human activity. At least two reasons allow us to consider pollution as the main‚ most widespread‚ and most dangerous factor of anthropogenic impact on the hydrosphere. First‚ pollution accompanies most kinds of human activities‚ including offshore oil and gas production and marine oil transportation. Second‚ in contrast with land
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Tanaya Devasthali TABLE OF CONTENTS 1 ABSTRACT……………………………………………………………………………………....3 2 REVIEW OF LITERATURE 2.1 INTRODUCTION……………………………………………………………………….3 2.2 DEFINING TERMS AND CONCEPTUALIZING RELATIONSHIPS 2.2.1 EL-NINO………………………………………………………………………...4 2.2.2 SOUTHERN OSCILLATION…………………………………………………6 2.2.3 LA NINA………………………………………………………………………...7 2.2.4 CLIMATE AND ITS MEASUREMENT……………………………………..7 2.2.5 CLIMATE SYSTEM……………………………………………………………8 2.2.6 CLIMATE VARIABILITY AND CLIMATE CHANGE……………………9
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