CHAPTER 31 OCEAN CURRENTS TYPES AND CAUSES OF CURRENTS 3100. Definitions The movement of ocean water is one of the two principal sources of discrepancy between dead reckoned and actual positions of vessels. Water in motion is called a current; the direction toward which it moves is called set‚ and its speed is called drift. Modern shipping speeds have lessened the impact of currents on a typical voyage‚ and since electronic navigation allows continuous adjustment of course‚ there is less need to
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The ocean is one of Earth’s most valuable natural resources. It provides food in the form of fish and shellfish—about 200 billion pounds are caught each year. It’s used for transportation—both travel and shipping. It provides a treasured source of recreation for humans. It is mined for minerals (salt‚ sand‚ gravel‚ and some manganese‚ copper‚ nickel‚ iron‚ and cobalt can be found in the deep sea) and drilled for crude oil. The ocean plays a critical role in removing carbon from the atmosphere and
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changes and continuities in commerce in the Indian Ocean region from 650 c.e. to 1750 c.e. THESIS: In the period between 650 C.E. and 1750 C.E.‚ the Indian Ocean region endured both change and continuity. CHANGES: Who dominated the trade‚ use to be used mostly by Indians and the Chinese but by 1750 Europe dominated most of all commerce.tfrtftgfygdfgrffffffffzzzzzgdfr1. Analyze the changes and continuities in commerce in the Indian Ocean region from 650 c.e. to 1750 c.e. THESIS:
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Ocean Pollution “Over 80% of marine pollution comes from land-based activities” (WWF‚ May 4‚ 2006‚ p.1). The rest comes from ocean-based activities. Different types of pollution enter the ocean each year. The major pollutants are oil‚ toxic materials‚ and debris. These materials not only pollute the ocean‚ but they also affect the marine life. Before the 1970s there were no laws to prevent and stop people from dumping pollutants into the ocean. Since the early 1970s many laws and regulations
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grassland‚ tundra. Then these six groups are broken down a bit father. In this paper we will discuss part of the marine biome which is the ocean biome. When one thinks of very large bodies of water such as the ocean‚ we are talking about marine biomes. Instead of freshwater it contains saltwater. They also include the coral reefs and estuaries. The ocean biome is the largest of all of the worlds. Which makes sense considering that the majority of the world surface is made up of water. Due to
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examines the effects that humans have been inducing on the ocean and how the pollution produced is affecting the form of life present there. There is plenty of evidence that the oceans have deteriorated at the hands of humans‚ but recent investigations show that deterioration‚ especially at the sea coasts‚ has increased significantly in the last years due to increased industrial discharge. Common synthetic pollutants that reach the ocean include pesticides‚ herbicides‚ chemical fertilizers‚ detergents
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The Ocean Floor No one has ever walked the sea floor and few have even seen it. This is because of the extreme conditions found there. It is dark‚ and the temperature is close to freezing. A person standing on the sea floor would be under tremendous pressure from the overlaying water. The pressure is hundreds of times greater than the atmospheric pressure. Such a force would crush the human body. Using research submersibles which are specially designed to with stand the pressure of the water‚ scientists
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Ocean Park‚ situated on the southern side of Hong Kong Island‚ is Hong Kong’s premier educational theme park. The current park covers more than 870‚000 square metres of land and features a diverse selection of world-class marine attractions‚ thrill rides and shows divided between three areas: Lowland‚ Headland and Tai Shue Wan. Operated by the Ocean Park Corporation‚ a statutory board‚ it is a not-for-profit organization that aims to provide elements of entertainment‚ education and conservation at
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is a problem in our world today. This problem is called ocean acidification. Ocean acidification is a process caused by increasing man made carbon dioxide emissions. This process is making the oceans more acidic. Ocean acidification could affect humans.With such decline of fish and shellfish stocks due to ocean acidification will impact an big role in the human source of protein. millions of people could be affected. Ocean acidification affects crabs snails and sea urchins. These
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“The acidification of the ocean today is bigger and faster than anything geologists can find in the fossil record over the past 65 million years” (Carl Zimmer). This is just an illustration regarding the tales of environmental degradation from carbon dioxide pollution in the ocean. The phenomenon of ocean acidification is imperative to understand; the reduction of essential pH levels over a protracted period of time is extremely harmful. In other words‚ ocean acidification can be measured by pH units
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