The Invaders

Fresh water lake ecosystems are very susceptible to invaders which degrade lake habitats and food webs. The Chinese mystery snail (Bellamya chinensis), referred to as Bellamya, is an understudied invasive species that is becoming more abundant in the fresh water lakes of North America and poses a threat to the ecological community of the Great Lakes. Understanding how Bellamya can effect lake ecology is critical to preventing the possible extinction of native snail species and the degradation of…

system is a complex network of cells and chemicals. It's mission is to protect us against foreign organisms and substances. The cells in the immune system have the ability to recognize something as either "self" or "invader" and they try to get rid of anything that is an invader many different kind of cells , and hundreds of different chemicals , must be coordinated for the immune system to function smoothly. Recent scientific advances in human stem cell research have brought into…

They often engaged in bitter wars, since the relatively poor but hardy nomads frequently fell upon the rich agricultural society at their doorstep and sought to seize to wealth. In Egypt, the invaders were named the Hyksos and they ruled from 1640-1570 B.C.Similar to China, Egypt’s reaction to nomadic invaders was in combat. The Egyptians and Hittites famous battle was the Battle of Kadesh was the Egyptians who were under Ramesses II and the Hittites under Muwatalli II. The battle took place in…

Introduction Invasive species are continually documented as a major risk to ecosystem health and worldwide biodiversity. Invasive marine fish introductions are still considered relatively rare and historically the environmental effects are often discounted. This is different from historically famous invasive species such as the zebra mussels in The Great Lakes, which caused well-documented harmful economic and environmental effects. While these are considered rare, they have been documented,…

against the conquistadores. Loud gunpowder and cannons frightened the people and soldiers riding horseback, whom they even believed to be one divine being, towered over the Aztec militia. While the Azteca possessed a strong, skilled military force, the invaders were unlike any army the people of Mexica had ever fought or seen before and they were not prepared to battle a force with such an artillery…

Hunting was a very important element of survival because the animals were the main source of gathering food and materials. However, in different periods and locations, hunting meant differently. In the Paleolithic era, survival was the priority, but the weapons and tools were all made from stones which resulted hunting was extremely hard and dangerous. In the dark caves, Paleolithic artists recorded the scenes of hunting by painting. Hall of Bulls, discovered in Lascaux, France is one of the…

disappointment. For example, in one of the scenes on the shield, Homer depicts a town with peaceful livestock and shepherds that “had not so much of a thought of danger”(14). Immediately following this image, a gruesome scene takes place in which the invaders, “went in and out with one another and fought as though they were living people hauling away one another’s dead”(14). Based upon the scenes…

local language of the natives and one taken from Spain. Also, many of the names of the landowners shown on the map indicate the fact that intermarriages between the Spanish settlers and the native aristocrats took place at the time. The Spanish invaders claimed that their motive behind the conquest was to convert all…

the Age of Invasion The famous explorer Christopher Columbus, from the Renaissance that took place in Europe between 1450 and 1600, said “following the light of sun, we left the old world” (Columbus). Indeed, as many people know, explorers at that time found the new world of many lands. For example, in 1492, Columbus discovered the Americas and the people who lived there. Some people consider this a significant discovery, but others view it as an invasion of the natives; Columbus and his people…

China from the northern threat of invasions. Not only was it used to defend China but it acted as a way to quickly warn if invaders were attacking by solders lighting beacons to warn other garrison on the wall that they were being attack. The soldiers would light their beacon if they saw the one before theirs lit so it was like a trail of fire to warn the people of China if invaders were attacking. The next example is of why conquerors need to protect from inside as well as outside their domain.…