The reading passage argues that the sea cow extinct in 1768 and provides three possible theories for their extinction. However, the professor explains that true cause of extinction is still unknown and there are problems with the argument by the passage and he repudiates each of the author 's reasons. At first, the reading passage posits that over-hunting of native people for food in that period is the primary reason for the extinction of sea cow. In contrast, the lecturer refutes this ratiocination by imparting that sea cow was an enormous animal with 9-meter length and about 10 tons weight. A small sea cow would be sufficient for the survival of the natives for months and they did not need to hunt a lot of these animals for food.
Oil was discovered in Wink, Texas in 1926. By 1929, the town had a population of 6,000. Despite the community’s success, I would not include this in my radioshow. I would not include this because it was impacted the least by the oil boom. the population of Wink, Texas drastically shrank after the oil boom was over.
Kayla Norris Biol 105 Dr. Jessy Robbins Critical Thinking: Why the Stellar Sea Lion is Declining The population of the Western stock of Stellar sea lions has been rapidly depleted, according to the Alaskan Fisheries Science Center of the National Marine Mammal Laboratory (Alaska Fisheries Science Center of the National Marine Mammal Laboratory: Marine Mammal Species, 1994). These sea lions have decreased by 85-90% since 1970 (Donnelly, 2003), from over 250,000 to less than 50,000 (Trites & Larkin, 1996) . Although the Eastern Stock is slowly on the rise, up to about 15,000, this is not enough to make a significant impact compared to the devastating loss of the Western stock (Trites & Larkin. 1996). The sudden plummet of the sea lions is problematic
In the early to mid 15th century the Spanish started to make large headway into North America. Shortly after Hernan Cortés conquered the Aztecs in Mexico, a small group of withered explorers headed by Alvar núñez cabeza de vaca shipwrecked off the coast of Texas. After enduring many illnesses and attacks his force was reduced from 300 to only about 90 men. For the next four years de vaca and his crew barely warded off extinction by trading with indians located in texas, however, illness and attacks from indian tribes cause their numbers to dwindle to the point where only de vaca and three others remained. The four survivors trekked from Texas through New Mexico and Arizona, staying with numerous tribes and witnessing great cities of wealth.
On the shores of the Attawapiskat Lake, about 18 hours north west of Barrie, lies the band of the Neskantaga First Nations, where only a portion of the population remains. The other portion leave, because of the large amounts of poverty and the isolation. This First Nations Community has been under a water boil advisory for over 20 years. Their current water filtration system hasn’t worked since 1995, and even when it did work it removed sand and grit, but left in harmful chemicals. The government gives the Neskantaga people $250,000 annually, which goes towards running a water treatment system that continuously tests positive for harmful chemicals after being filtered.
Vaquita, the world’s most rare marine mammal, is on the edge of extinction. This little porpoise wasn 't discovered until 1958 and a little over half a century later, we are on the brink of losing them forever. Vaquita are often caught and drowned in gillnets used by illegal fishing operations in marine protected areas within Mexico 's Gulf of California. More than half of the population has been lost in the last three
In the 1900s the Environmental Protection Agency listed the bald eagle as an endangered species. During those years, DDT usage was widespread, and it is believed that its use was responsible for the decline in the number of eagles. DDT is a chemical that was used to control mosquitoes, and it caused a thinning of the eagle egg shells. The population of breeding pairs of bald eagles has changed in several states over a 12-year period as is shown in the table below. Population of Breeding Pairs of Bald Eagles State Year 1 Year 3 Year 6 Year 9 Year 12 Maryland 123 154 201 260 319
Pigeon meat was commercialized as cheap food, resulting in hunting on a massive scale for many decades. There were several other factors contributing to the decline and subsequent extinction of the species, including shrinking of the large breeding populations necessary for preservation of the species and widespread deforestation; which destroyed its habitat. A slow decline between about 1800 and 1870 was followed by a rapid decline between 1870 and 1890. The last confirmed wild bird is thought to have been shot in 1900. The last captive birds were divided in three groups around the turn of the 20th century, some of which were photographed alive.
The species was last filmed in the wild in the year 2006, in the film Life in Cold Blood by David Attenborough. The remaining species were taken into captivity as the fugal infection was rapidly depleting the zeteki population. The location for the filming was not disclosed to prevent further poaching. The other reasons for the depletion of the Panamanic frog are habit destruction due to human interference, trees cleared for housing and Urbanization , encroachment of land for agriculture, pollution and international pet trade. Even though captive population seems to thrive well thet still cannot be reintroduced into their natural habitat.
I was baffled how warm the water was it must of raised at least a few degrees from the last time I was here. Subsequently to what occurred I must continue to help the coral and animals after quite a storm. After an hour or so I noticed the lack of sea life, years ago there would of been many Sea Turtles, the Blue Whale and a few Dugongs in which these are all extinct
For example, Rodley mentions that in the year 2005 Nebraska restricted the sale of cold medicine and the number of meth lab seizures fell from 321 in 2004 to just 9 in 2012. Yet eight years after the law took effect, Nebraska law enforcement official still stated that meth was the “single biggest threat”. One drug task force reported that there was a 1,000 percent increase in meth seizures from 2011 to 2013. He then mentions Missouri, another state that also passed a law that requires an ID to purchase cold medicine that contains pseudoephedrine. The state soon passed additional laws further restricting the sale of the medicine.
Today spotted owls are particularly rare in their traditional habitat range of British Columbia, the Cascade Mountains of northern Washington, and the Coast Ranges of southwest Washington and northwest Oregon. However, a large and virtually isolated population still exists on the Olympic peninsula. Estimates suggest that the amount of suitable habitat available to spotted owls has been reduced by over 60 percent in the last 190 years. The main threat to the spotted owl is habitat loss as well as competition as well as being edged out of their territory by the barred owl. Listing of the northern spotted owl as threatened and the designation of critical habitat space are helping to reduce habitat loss on Federal lands.
A few years ago in 1807, congress had passed the Embargo Act, an act that forbids foreign trade. Today, a few years from that day in 1807 we look back on the preoccupations that have occurred because of the act. In just one year we saw our U.S exports decline by $84,000,000. We started with $109,000,000 and ended with $25,000,000.Thousands of Americans have turned to smuggling. The Embargo has trigger a serious Economic Depression and not much can save us right now.
Despite proper handling of restoring power, the aid to Hawaiian citizens following Iniki was notably slow, with some families still waiting on assistance 6 months later. The insurance companies, already overwhelmed by claims from the southeast after a devastating Hurricane Andrew just weeks earlier, were unprepared to handle the increased demand, and many companies chose to stop operations and leave the Islands in the following year. In response the Hurricane Relief Fund was enacted in 1993, but after 7 years with no major tropical activity impacting Hawaii, the fund was stopped in