(Document A) Since there was a short supply of fresh water, many colonists died of dehydration. Additionally, the document stated that waste in early Jamestown tended to cluster instead of flush away. These mishaps caused disease which eventually led to death. Another hardship the colonists had to endure was their exposure to new deadly diseases. Nearly 70 out of the 110 original colonists lost their lives by
This includes exposure to light, pollution, weathering, erosion, and people walking through the sites, treasure hunters and vandalism. The damage done to Pompeii alone is expected to cost over 300 million US dollars to conserve the town, although due to the severe lack of funding this can be considered to be an impossible task. As both Pompeii and Herculaneum were initially excavated in the 18th century they have been standing exposed to the elements for hundreds of years, and so all structures have been affected by general deterioration over time. Excavations have left structures unstable and are on the verge of collapse. For example on November 6th 2010 the house of the Gladiators collapsed due to general deterioration and also heavy rainfall – see source B.
They do this because it generates more income than any other crop. In creating these narcotic fields they force the government to act. This happens in such great numbers that the government is left with limited options. Extremely dangerous herbicides are sprayed over great distances damaging both the plantations and nearby natural ecosystems. The farmers who plant the coca seed just move to wherever there is more fertile soil.
The populations are becoming so hard to find that fisheries are now catching the fish in estuaries, a place where the juveniles grow. There is also no ban on fishing them during certain seasons. This leads to the capture of pregnant females, and of juveniles. The population has declined so much that many fisheries have gone out of business. The reason I don’t think that the consumption from predators is why the population is declining so rapidly is the fact that these predators have been hunting these fish for hundreds of years.
Rainforest ecosystems are characterised by heavy convectional rainfall, this is the rainfall that occurs in warm or tropical climates when heated air rises and cools, high humidity, and this is the amount of water vapour in the atmosphere, the abundance of vegetation and nutrient-rich but shallow soil. These factors combined give rise to a unique water and nutrient cycle. Heavy rainfall, warm temperatures and constant sunlight provides the optimum conditions for plant growth; however the much of the sunlight is blocked by the canopy formed from trees. Many plants develop immediately in-between gaps in the canopy resulting in the tropical rainforest’s dense vegetation covering 1.4 billion acres. From ground level up these levels of vegetation are: The shrub layer.
Some of which include, global warming, destruction of habitat, and soil erosion. Global Warming has gradually increased over the years and the destruction of the Amazon is one of the reasons why. Steve Schwartzman, director of tropical forest policy for the Environmental Defense Fund (EDF), discussed how much the Amazon actually plays a part in all of this. He states that, “About 15 percent of global greenhouse gas emissions come from tropical deforestation – more than from all the worlds’ cars, trucks, trains, ships and airplanes combined.” Rapid climate change is one of the biggest threats when dealing with the rainforest because so much of our Earths supply of greenhouse gases comes from it. The EDF is concerned that if more of the Amazon is cut down and global warming continues to be on the rise, the remaining rainforest will soon turn into a savanna.
There are many plants and animals that will not be able to adjust to these patterns and may become extinct. In addition to that, sea levels are continuing to rise and are causing thousands of people in areas around the coast to have to relocate. One of our main greenhouse gas emissions is carbon dioxide, CO2. Examples of natural greenhouse gases include water vapor, CO2, methane, and nitrous oxide. As a result of man made activities such as the burning of fossil fuels and deforestation, the amounts of all of these gases in our atmosphere has greatly increased.
• Aquatic ecosystems: Acid rain makes water bodies, such as streams, rivers and lakes, acidic. At a pH below 5, fish eggs are unable to hatch and a lower pH can kill adult fish as well. This was seen in Canada, as the sport fish population in acidified lakes showed reproductive failure, skeletal deformities and increased mortality rate due to acid rain. In southern Norway during the 1970’s fish were killed in over 20% of the lakes as a result of acid
The amounts of waste recycled as a percentage of the total waste per year is extremely low. As a result, residents of Mexico City face fines for failing to separate their trash as pressure mounts for the closure of the main, overweight, landfill. Even though the residents
With the depletion of the forest that converts the carbon dioxide into oxygen it has monumental negative effects on the planet as a whole. “Eleven developing countries recently linked to 82 percent of the carbon dioxide buildup due to deforestation will likely come under the greatest pressure for change: Brazil, Indonesia, Colombia, Cote D’Ivoire, Thailand, Laos, Nigeria, Vietnam, Philippines, Myanmar (Formally Burma) and India”. (“cooper”) One of the major locations deforestation is in the south Asian country Thailand. “Located wholly within the tropics, Thailand encompasses diverse ecosystem, including the hilly forested areas of the northern frontier, the fertile rice fields of the central plains, the broad plateau of the northeast, and the rugged coast along the narrow peninsula.”(“Thailand”). Since the formation of the country Thailand