a) Describe the physico-chemical qualities of water that are important to aquaculturists. Aquaculture can be defined as the high-density production of fish‚ shellfish and plant forms in a controlled environment. Stocking rates for high-density aquaculture are typically thousand fold greater than wild environments. Modern fish culturists employ both open and close systems to raise fish. Open systems‚ such as‚ the raceways are characterized by rapid turnover of water. Closed systems are commonplace
Free Carbon dioxide Oxygen Water
River of Africa Surrounding landforms and availability of resources affect civilizations. The survival of countries in Africa relies on the Nile River. Physical landforms‚ climatic agriculture as well as ancient cultures and advances contribute to the effective utilization of the Nile. Various subdivisions and landforms along the coast of the river present tremendous opportunities for the Africans. Over time‚ the control of water intake and the substantial contribution of different climates create
Premium Nile Blue Nile Egypt
Monsoon rains‚ which were seasonal also‚ provided hardship for the farmers because they had strong winds sometimes. Deposits of rich soil and silt were deposited when there was flooding and they were unpredictable. Some of the world’s tallest mountains were in the North. The Indus River is between the Himalayan and Hindu Kush mountains. These two mountain ranges have the highest mountain peaks
Premium Civilization China Indus Valley Civilization
Colonisation and Succession in an Ecosystem 1. Ecosystem is a community of organisms which interact with their non-living environment and function as a unit. 2. Habitat is a natural environment where organisms live. Also provide shelter‚ food‚ living space‚ nesting sites and mates. 3. Species is a group of organisms that look alike and have similar characteristics‚ share the same roles in an ecosystem and are capable of interbreeding to produce fertile offspring. 4. Population is
Premium Root Soil Mangrove
Huang He (Yellow) River Mesopotmia Flat plain known as Mesopotamia lies between the two rivers in SW Asia(Middle East) . Because of this region’s shape and the richness of its soil(silt) it is called the Fertile Crescent‚ the rivers flood unpredictably. Sumerians were first to settle in this region‚ attracted by the silt. Disadvantages / Environmental Challenges 1. Unpredictable flooding / dry summer months 2. No natural barriers for protection 3. Limited natural resources - stone‚ wood‚ metal Solutions
Free Mesopotamia
Jessica Morris‚ arrived. During the interview with Morris‚ Joe learned that she was the victim of a layoff by a competitor‚ Silt‚ Sand and Such. Joe was not terribly impressed with Morris‚ but just before she left‚ she opened her briefcase and offered Joe a sheet of paper bearing the name of an official in the Saudi Arabian government. Morris explained: When I was with Silt‚ Sand and Such‚ we started a program for finding innovative markets for our products. You know‚ we wanted to tap markets no
Premium United States Saudi Arabia Management consulting
as fine or coarse aggregate. The aggregates are usually washed and graded at the pit or plant. Naturally occurring concrete aggregates are a mixture of rocks and minerals. Weathering and erosion of rocks produce particles of stone‚ gravel‚ sand‚ silt‚ and clay. Recycled concrete‚ or crushed waste concrete‚ is a feasible source of aggregates and an economic reality‚ especially where good aggregates are scarce. Aggregates strongly influence concrete’s freshly mixed and hardened properties‚ mixture
Premium Construction aggregate Concrete Density
amount and kind of packing which the grains have acquired. 3. The amount of cement present. • Examples of rocks are many types of sandstone. SANDSTONE GREYWACKE c) Argillaceous Deposits (French word for silty) • Clays and silts are muddy sediments (< 0.002 mm) deposited slowly in still water on the continental shelf or in lakes
Premium Sedimentary rock Coal Mineral
Wines of Oregon Oregon as an American Wine Producing State Oct‚ 31 2012 Table of Contents Introduction…………………………………………………………………………………….2 History of the Oregon Wine Industy……...…………………………………………………....2 Grape Varietals Grown in Oregon……………………………………………..………………4 Types of Wine Produced in Oregon……………………………………………………………4 Viticultural Area of Oregon………..…………………………………………………………..5 Viticultural Practices in Oregon………………………………………………………………..8 Producers within Oregon…………..…………………………………………………………10
Premium Cabernet Sauvignon Wine Chardonnay
Geography Rivers 1. The speed and volume of a river varies from place to place along a river’s course because of many reasons. In the upper course‚ the volume of water is low as there are few tributaries. In comparison‚ the volume of water in the middle course is higher as there are more tributaries supplying water to the main river channel. The volume of water in the lower course is the highest as the lower course has the most tributaries. However‚ many other factors will also affect the
Premium Surface runoff Erosion Geomorphology