Preliminary Biology – Research Task 1) Assess the impact of three particular technological advances on the understanding of the platypus. Technology is a major tool that has been used over the last century to understand organisms better, specifically the platypus. The Platypus was first encountered by Europeans in 1798, where they thought somebody had sewn a duck’s beak onto a beaver-like animal. Since then, our understanding of the Platypus has increased and the following three technological advances have shown how and why it has increased. a) Electron Microscopy: The electron microscope is a type of microscope that uses a beam of electrons to create an image of the specimen.
This Largely covered area of plastic remnants that have been broken down to small pieces have a damning effect on the wildlife that depends on the Gyres currents for food. Why hasn’t anyone said anything about this issue in the northern Pacific, What is the extent of the damages on the wildlife, and what can we do about it? These are some points that I would like to know about. In 1998 Charles Moore and his crew sailed through the Gyre, about 1,000 miles
The Arctic Small Tool Tradition, also known as Pre-Dorset, is a circumpolar cultural development which probably originated in Siberia. The oldest sites in North America appear suddenly on the west coast of Alaska about 4,000 years ago. Similarities to the Plano and Northwest micro blade traditions, as well as to Siberian Mesolithic blade technologies have caused considerable debate over origins (Irving 1962; Laughlin 1962, MacNeish 1964; Damas 1969). The technology bears no resemblance to the complexes which were previously present in the coastal regions of Alaska. The warming trend which was still evident at this time may have assisted in the rapid movement of people across the High Arctic.
African Penguins Alyssa M. Peterson Advanced English 9 11/14/13 Alyssa Peterson English Pd. 1 11/11/13 African Penguin’s The African Penguin goes through many struggles throughout the year. Harsh environmental conditions are one thing they should expect. However, the effects of global warming and habitat loss from destructive oil spills are unexpected. Climate change seems to be one of the major forces of their possible extinction.
The Rapa Nui people probably arrived from Polynesia around 400 AD. There are about 800 moai (statues) on Easter Island. The written language of the Rapa Nui has yet to be deciphered. Although the arrival of white explorers and missionaries had a detrimental impact on the island, Easter Island was deforested and nearly destroyed before their arrival due to overpopulation of the tiny island. In 1995, the film Rapa Nui was released.
That event created a “volcanic winter” that devastated the ecology of southern and eastern Europe, in their view.12 Geologist Biagio Giaccio of the Institute of Environmental Geology and Geoengineering In Rome challenges Golovanova’s account. Excavations in four southern Mediterranean caves have unearthed modern human tools that, contrary to the new proposal, are slightly older than ash layers from the 40,000-year-old volcanic eruption in Italy, Modern humans survived because they lived in Africa and on the tip of southwestern Asia at that time, safely outside the range of volcanic ash clouds Some think one of the most likely causes for the Neanderthals extinction is them being killed off by diseases/viruses that MDH unintentionally brought with them as they moved into Europe during the last ice age. 13 Certainly cases of such things happening in other groups of people has been documented, like the Spanish bringing Smallpox over to the Aztec empire. It’s possible that
Abstract Worldwide populations of killer whales (Orcinus Orca) have long been thought to be an individual species with a unique cultural component. Transient and Resident orcas have long been studied to determine the cause of their starkly different societies and prey predilection. Until recently, they were considered to be no more than ecotypes of one another—genetically identical although behaviorally very different. Recent research, however (the discovery of a drastically dissimilar pod in Antarctic waters) has led scientists to question this classification and contemplate the real possibility that these divergent groups could in fact be genetically isolated species. With this being the case, much more care must be given to preserve the
Charles Lyell, a British geologist, reintroduced the idea of uniformitarianism when he published a series of books called Principles of Geology. Only then did people start to seriously consider that uniformitarianism was the way in which the earth was shaped. During the late 20th century, scientists began to challenge uniformitarianism. They believed that catastrophes do, at times, play a major part in shaping the Earth. Today we realize that neither uniformitarianism nor catastrophism completely explains what shapes the Earth.
These are important to prove evolution. Convergent evolution includes three very important parts: (a) common ancestry, (b) speciation, and (c) natural selection. Evidence of a continental drift involvesis marsupials spreading across oceans that did not yet exist, making their travel across vast bodies of land possible. A key examplenother supporter of the a species that experienced continental drift is the Glossopteris. This tree was only able to grow in warm climates and had a seed that could not float, yet fossils of this tree are found in different hemispheres of the world today.
In Arizona, the fence has contributed to flooding on both sides of the border, changed the roaming patterns of the area’s native jaguars and destroyed the desert habitats of several bird species, including an endangered quail, according to environmentalists. The building of patrol roads has also decreased the Sonoran pronghorn’s habitat, as the antelope like animal rarely crosses roads, according to a 2006 report from Defenders of Wildlife. The pronghorn’s limited jumping ability also does not allow it to leap over barriers. Altogether, Brian Nowicki, a Center for Biological Diversity conservation biologist says, “30 endangered, threatened, or candidate species live along the U.S.-Mexican border in Arizona and Sonora, 15 in the area where the wall would be built. Moreover, building a wall, along with the roads and support facilities it necessitates, would not only plow under saguaros and other fragile desert plants but scare Sonoran pronghorn and other wildlife from important sources of food and water” (Cohn