Environmental science ia unit 1. Study Guides & Practice Tests 2019-01-06
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Importance of Environmental Science or the need to study Environmental Science: 1. Explain the primary concern over. Broadly, the factors that influence the growth of crop or crop production can be classified as Internal or Genetic Factors and External or Environmental Factors. The cuvette was washed after each reading and the samples for each site was then read on the colourimeter and tabulated in Table 2. However, pollution would have caused a decrease in this average.
How do the abiotic and the biotic components interact in biochemical cycles? Furthermore, water samples were collected from each site and water quality tests were done on these samples. Refer to Lab 3 Total Phosphates — A colorimeter was used to create a 4-point standard curve of phosphate absorbance vs concentration, by using a set of four phosphate standards. This study focuses mainly on four coastal ecosystems in Trinidad. This is because the alkalinity of water is a measure of how much acid it can neutralize. Water samples were collected at each of the visited sites by placing the water bottles under water for 1 minute, until all the air bubbles were removed. He was left his eldest son, Rami, who remained faithful and stayed by his side, his Mule Lizett , his Horse Marble and his piece of land in River Bottom.
Environmental Science for CAPE Unit 1: Oxford University Press
This may be because site D, in contrast to sites A, B and C, is also a mountainous ecosystem and as such, few species live there. We collected data from the fields of demography, economy, education, health, geography, and energy. The Chatuchak weekend market is a Environmentally polluted area. On the pH scale, a pH of 7 is neutral, below 7 is acidic and above 7 is basic. The feeding practices and harvesting were also documented.
Approximately half of it was visited. Over the years, tilapia became the dominant species in the pond, which is currently made up primarily of Mozambique tilapia. Table 6 — Sources of Nitrate Ions Sources of Nitrate Ions - Agriculture runoff - Urban runoff - Animal feedlots and barnyards - Municipal and industrial wastewater - Automobile and industrial emissions - Decomposition of plants and animals Alkalinity A measure of how much acid water can neutralize is known as the Alkalinity of water. Other physicochemical parameters that maybe helpful include : a. Each sample set was then brought to the laboratory for testing using the LabQuest2 to obtain the following readings of — Biochemical Oxygen Demand — Bottles E1 to E5 which were stored in ice and wrapped in foil were used for this.
Environmental Science for CAPE Unit 1: Oxford University Press
As such, the purpose of this study is to recognize the services of four coastal ecosystems and to investigate and compare the anthropogenic impacts of each of these coastal ecosystems in Trinidad. These fish are attractive, easily bred, hardy and resistant to disease and, can live in a wide range of water conditions. Groundwater, Hydrology, Irrigation 1658 Words 8 Pages Pannasastra University of Cambodia Commitment to Excellence Environmental Science 2011-2012 Phnom Kravanh Instructor: Dr. If the number of death is less than the number of births then the population is growing larger; consequently if the number deaths is greater than the number births then population is decreasing. Another factor which would result in an increase in the level of Biological Oxygen Demand would be Salinity.
The sites where the quadrats were to be placed for sampling were located 3. The use of scientific knowledge is often represented as a fundamental principle within environmental controversies. Mark and Recapture - Day 1 — For this method, feed pellets were used to attract the tilapia to a specific location and nets were used to capture several tilapia alive at one time. The fishes were also observed for any form of discolorations as indications of illness. The bottles were then taken back to the laboratory for testing.
The water at this site of the pond was dark brown in color and was not transparent. They provide sustenance to many communities in Trinidad and Tobago as well as host many habitats for various species of plants and animals. Things To Do In Chaguaramas Bay Peninsula, n. In the same way, the enhanced crop diversity and better dispersing method of food have improved the nutrition of billions of people. The average values were recorded in Table 2. Lastly, there are toilet facilities near the pond, with the sewage water pipe running into the pond.
Carrying capacity: biotic potential + environmental resistance, what population the environment can withstand What I kind of know 1. This can be widely impacted by pollution and therefore needs to be monitored. . Adjustments were made prior by the technician who advised a 1:8 dilution be used. The results of the tests depicted that the temperature of the sites ranged between 24. Tilapiia Culture In Trinidad and Tobago: Yet Another Update.
Environmental Science for CAPE Unit 1: Oxford University Press
The growth rate of tilapia is best between a pH of 7 — 9. Analysis of data 6marks - Explain what your data shows 3. Note: it was ensured that the person collecting the sample was standing downstream from the sample. Be certain that your question is as clear and specific as possible. Masking tape or parafilm 9.
