(Essentials of Anatomy & Physiology, Chapter 15, 504-511) 2. Gas exchange within the lungs and body tissues is vital for life to exist. Briefly explain the gas exchange that occurs in the lung tissue and body tissue for oxygen and carbon dioxide. What is the driving force for this movement of gas (think concentration gradient)? Finally, how does carbon monoxide disrupt the process of oxygen transport?
c) Name 2 different methods of measuring pH of substances (in a laboratory)? • Probe and meter • Litmus paper 5. Explain the relationship between the natural pH of the skin and the action of: a) Microflora • The bacterial microflora on our skin are able to survive acidic conditions with a pH range 4-6. Our acidic skin protects us from harmful bacteria or pathogens, our microflora are able to breakdown the fatty acid molecules and thereby increase its
* Madagascar and the Indian Ocean were once a place of high plant and animal diversity and population however, in the last 1500 years people have come into this untouched environment impacting these species due to their lack of knowledge on human involvement. 3. Choose five examples from the passage and explain why each would be of interest to conservationist. * About 150 species of birds are only found on these islands
Planning on visiting a cave?, well don’t get your hopes up on seeing one there in this age. Many scientists believe that the days of the salamandor lining the walls are over, due mostly to destruction and deterioration over time. Salamandors actually are in danger in pretty much any enviornment they choose to call home. The number of wetlands and forests is decreasing every year, in the last 100 years alone 54% of wetlands have been lost. Vernal pools would be the perfect fix for salamandors,
Blockades Both countries used their navies to blockade the enemy ports to stop supplies getting through. Britain relied on other countries to bring in food and supplies and Germany knew if their u-boats stopped this trade then Britain would starve. February 1915 Germany said that all merchant ships entering/leaving Britain would be sunk. This was optimistic as there were 15000 sailings a week to and from British ports and the Germans had only 21 u-boats. However by 1917 the Germans had 200 u-boats and were sinking 1 in 4 of the ships heading to Britain.
Approximately25 million people died. Many cities were wiped out including the medieval cities Lamen and Thurgau. The Black Plague killed many but it affected England the most. They lost one third of there population. The church lost man power and impoverishment through not being able to cultivate their vast tracts of land.
As the Indians were forced to leave the land white people just came over and took part of the land that belong to the reservation and there was nothing the Indians could do about it. The discovery of gold made matters even worst as Americans came across the land looking for fortune in large numbers and in the process destroyed the land and the ecosystem. Their vast numbers drove away the bison herds and forced them to change their emigration patterns, which made it a lot more difficult for the Indians to sustain themselves. In addition to being forced to move to small reservations they were put on rationed food and supplies from the U.S government and to change their culture all against their will. The reservations were not set on the best land; those were given to white Americans.
England’s first attempt at colonization in the New World In 1584, Walter Raleigh was a famous explorer who organized an adventure to the New World for his men. He decided to stay in London while his men are on their way to the new world and he never leaves London. His men founded a colony known as Roanoke Island wasn’t to pretty but it was something. Swamps surrounded Roanoke, it was mosquito infested who carried diseases. This attempt to colonize in the new world was ruled a failed attempt because everyone died and got sick.
He informs us of the widespread famine and the government’s denial of food aid. The prevalent diseases are polio, Hepatitis A, B, C, and E, rabies, malaria, typhoid, yellow fever, meningitis, leprosy, tuberculosis and HIV/AIDS (15). The living conditions are no better. Some of the tribes are living in open caves, their villages having been bombed offer no shelter in their burned out buildings. The Sudanese government is supplying arms to the Arab nomads who have formed militias to attack and destroy villages.
The next day Charles was due to visit his uncle, and when Josiah was told he immediately came down to Shrewsbury and persuaded Dr Darwin to change his mind and to finance his son for the proposed three year voyage. Charles was not employed as a naturalist, he was a gentleman companion to Captain Fitzroy, and Darwin's father paid for his passage and all the expense of making a natural history collection and sending specimens back to England. Darwin had never been to sea before he set sail on the Beagle in December 1831. He was 22 years old when he embarked on this voyage which lasted for five years and two days. Charles suffered throughout the five years of the voyage from terrible sea sickness.