Selenium‚ found in group 16 of the periodic table‚ follows a cycle in the environment as it transfers between the biosphere‚ atmosphere and hydrosphere. It is also an essential element for humans and animals. It can cause both deficiencies and toxic effects if not taken in the correct quantities. This essay outlines the general features and behaviour of Se in the primary environment‚ its general abundance and its ability to substitute into minerals. Its Eh and pH also are important factors in determining
Premium Igneous rock Periodic table
SDME: Happisburgh Background Happisburgh is located 30km north east of Norwich‚ the soil consists mainly of relatively soft Jurassic-Cretaceous aged mudstone‚ limestone and sandstone‚ and as such is easily eroded; currently it is sitting on and even in the sea coast‚ with a population of 1400 people and roughly 600 buildings also while currently being a coastal village it was once separated from the sea by the parish of Whimpell‚ historic records seem to suggest that over 250m of land were eroded
Premium
CHAPTER ONE 1.0Introduction Basement and crystalline basement rock are used to define the rocks below a sedimentary platform or cover‚ or more generally any rock below sedimentary rocks or sedimentary basins that are metamorphic or igneous in origin. In the same way the sediments and/or sedimentary rocks on top of the basement can be called a cover or sedimentary cover. The basement complex may as known consists of various rock types including granites‚ granodiorites‚ charnockites‚ syenites
Premium Metamorphic rock Granite Rock
15 Dec 2011 Global Warming/Climate Change Before we get into the specifics‚ lets define the terms global warming and climate change. Global warming or the greenhouse effect is a more specific term that refers to a gradual increase in planet-wide temperatures which is now well documented and accepted by scientists as fact. It is the warming of the lower atmosphere which is a result of the increase of a number of gases that have been classified as greenhouse gases. It is a specific type of climate
Premium Global warming Climate change
MINDANAO UNIVERITY OF SCIENCE AND TECHNOLOGY COLLEGE OF INTEGRATED AND INFORMATION TECHNOLOGY DEPARTMENT OF INFORMATION TECHNOLOGY [pic] PROJECT TITLE Online Petstore System Presented to SHEILA E. DIMASUHID In Partial Fulfillment of the Requirement for the Subject IT43 – Database Management System 2 by: Agbalog‚ Charmae A. Jalog‚ Karren C. Salomo‚ Beberly S. Sulapas‚ LaizaFhel G. Yacapin‚ Doris Joy L. March 2012 APPROVAL
Premium Bird Animal
Plate Tectonics Ever since the beginning on time‚ Humans believed the ground is solid and immobile. But this is not true whatsoever. The Earth is every-changing and continually in motion. The stability of the Earth is not at all what we think it is. Thinking about the rotational axis of the Earth‚ and possibly of what the Earth may become at a certain point in time‚ has a great influence on understanding all aspects of living things‚ either in the past‚ present‚ or future. The study of Plate
Premium Plate tectonics
Sandalwood is the name of a class of fragrant woods from trees in the genus Santalum. The woods are heavy‚ yellow‚ and fine-grained‚ and unlike many other aromatic woods they retain their fragrance for decades. As well as using the harvested and cut wood‚ essential oils are also extracted from the woods for use. Both the wood and the oil produce a distinctive fragrance that has been highly valued for centuries. Consequently‚ the slow-growing trees have been overharvested in many areasThe sandal tree
Premium Bamboo Wood
Chapter I: INTRODUCTION A. Background of the Study THE RADISH The radish (Raphanus sativus) is an edible root vegetable of the Brassicaceae family that was domesticated in Europe in pre-Roman times. They are grown and consumed throughout the world. Radishes have numerous varieties‚ varying in size‚ color and duration of required cultivation time. There are some radishes that are grown for their seeds; oilseed radishes are grown‚ as the name implies‚ for oil production. The most
Premium Pesticide Radish Tomato
PRACTICAL 6 Seed Plants (Gymnosperms and Angiosperms) OBJECTIVES: 1. To describe the features of seed plant life cycle and the concept of the dominant generation. 2. To describe the life histories and related reproductive structures of gymnosperms and angiosperms. 3. To summarize the features that distinguish gymnosperms and angiosperms. 4. To discuss the advantages of seed plants to dominate land and their evolutionary adaptations on land. EXPERIMENT 1: Gymnosperms INTRODUCTION: Gymnosperms
Premium Seed Plant Flower
_____Cameron Kashani_____‚ a review of: Spicer‚ John I. 2009. Biodiversity. New York: Rosen Pub Biodiversity and its decline is a subject often overlooked when talking about the dangers facing our planets ecosystem. A main reason for this seclusion is the vague nature of the word biodiversity. It is a term that has so many different meanings because of people’s different subjective interpretations. However at the Convention on Biological Diversity at Rio de Janeiro‚ Brazil in 1992‚ the term was
Premium Extinction Biodiversity Habitat fragmentation