By releasing this gas into the air the natural greenhouse gases increase and cause many effects to happen. Carbon dioxide is also caused by removing natural resources from the land for agriculture. When the Earth starts to warm many other things do to, the ocean will become more acidic and glaciers might partially melt. If the oceans become acidic, fish and other sea creatures will have an unlivable environment. If glaciers start to melt arctic animals that rely on the ice may start to become extinct.
Destruction and changed habitat force fish to endure new environmental conditions, forcing evolution (Faulks et al. 2010). When dams block rivers, fish above the dam become residents and have decreased populations. In Hokkaido, Morita et al. (2009) show the dams cause habitat fragmentation. This causes changes in populations of white-spotted charr (Salvelinus leucomaenis) (Morita et al. 2009).
Although we have explored less than five percent of our vast oceans, humans have set them on a path to devastation long before we could discover the rest. Mark Prigg for dailymail.com warns by the end of the century, the oceans will have been damaged to an irreversible point. Without the oceans, the global climate cannot be regulated, where the world’s environmental state would then be far worse than what we have seen to be possible by, for example, global warming. It begins with our oceans becoming filled with various forms of waste by humans, atmospheric changes causing acidity in water increase, and imbalances of organism life leading to lower levels of oxygen. How the oceans may die is crucial to understand in order for them to be preserved for the survival of the planet.
The lecturer and the reading passage offer two theories to explain why the sea otter population is in rapid decline. The two theories are predation theory and pollution theory. The professor argues predation is the more likely cause than pollution because of the absence of dead sea otters washing up on shores. However, the reading passage attributes the decline of the sea otters population based on evidence of increased ocean contaminates leading to greater vulnerability to infections.
(Stevens) This in line with disease can cause a detrimental decrease in the wolf population. Other things that can affect the population include precision rates, natural disasters and soil fertility.(Chadwick). As the wolf population decreases their is a loss in all of their roles that were mentioned above. These include a loss of diversity, a lack of the damn and thus a pond, and an increases an increase in the Elk population. With a decrease of wolf population also comes a later increase in population.
Water pollution has been a growing problem over the last couple of decades. The Pacific Ocean, covering about 46% of the Earth 's water surface, making it larger than all of the Earth 's land area combined, is vastly polluted. This issue is called The Great Pacific Garbage Patch, also known as the Pacific trash vortex, which is a gyre of marine debris in the North Pacific Ocean discovered in 1997 by Capt. C. Moore. The Great Pacific garbage patch formed slowly as a result of the ocean or marine pollution and gathered by oceanic currents.
Economically, two industries will be severely impacted by marine debris which are tourism and fishery. In tourism industry, marine debris can make beaches look ugly and dirty, lower the aesthetic values of the beaches and eventually result in lost revenue from tourism. To mitigate the problem, local communities would have to spend money to clean up their beaches which leads to another economic lost. For example, New Jersey are spending 1.5 million dollars annually to clean up its beaches (YOTO Discussion Papers, 1998). In fishery industry, fishermen are economically affected when their fishing gears and vessels are entangled or damaged by marine debris.
Dead zones are oceanic areas where there is a depletion of oxygen levels and often have no living organisms. In fact, according to the National Oceanic and Atmospheric Administration (NOAA) “ The second largest dead zone in the world is located in the U.S., in the northern Gulf of Mexico” (US Department of Commerce, National O...). They are caused by pollutants such as oil and fertilizers which can cause an overgrowth of algae. The overgrowth of algae blocks sunlight from the plants underwater, disrupting the photosynthesis process. As a result, the food chain is disrupted because the producers at the bottom of the food chain cannot produce because sunlight is blocked, leading the primary consumers without a source of food.