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Essay on homo sapiens and homo erectus
Essay comparing homo sapiens and homo erectus
Essay on homo sapiens and homo erectus
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Primitive Man's Relationship with Fire and the Environment
Common knowledge holds it that primitive man was a being barely more developed than the ape, existing without culture, innovation, or technological prowess. This belief focuses especially on homo erectus, an ancestor of man who lived from about 2 million to roughly 200,000 years ago. It is commonly believed that h. erectus was a creature existing in technological stasis, without the ability to advance his existence through innovation, and void of culture. This type of thinking could quickly be altered, though, if recent discoveries hold true. Recent evidence points to a distinct possibility that h. erectus may have been the first ancestor of man to harness the power of fire. Such a finding would greatly alter the current system of beliefs in regard to the evolution of man and the status of man's ancestors during the time of h. erectus. These findings would indicate that h. erectus did have some culture, and some innovative skill that allowed him to control his environment. The evidence supporting the taming of fire by h. erectus is not beyond reproach, though. In fact, it has come under heavy questioning. A desire for even stronger evidence could eventually dispel the notion that this primitive version of man could control fire, and allow for maintenance of the current belief that man did not truly evolve into a being with any type of culture until the existence of homo sapiens.
Up until the year 2000, a great deal of evidence surrounding man's use and control of fire indicated that such technology probably did not appear until roughly 200,000 years ago. The implication that h. sapiens was the first in the line of mankind to control fire was supported by evidence found at a site in Zhoukoudian, China. While it had been believed for some time that Zhoukoudian was the first site of controlled fire, evidence found through more exhaustive research indicates otherwise. There are no hearths at the site in China. Nor are there any food remnants. Such evidence leads to the belief that the burnt bones found at the site are probably the result of a natural fire (Wuethrich). The lack of strong evidence supporting the site as one in which man's control of fire is displayed supported the belief that h. erectus lacked technological prowess and culture.
The next best candidate for the site of man's first documented control of fire was a collapsed sea cave in Menez Dregan, France.
Over the last few hundred years, more and more has been added to the world’s fossil collection, fossils from all over the world. New theories have been created and old theories have almost been proven about the evolution of man. For example, we have proof that different species of man existed with certain types of DNA sequences and instincts, some we may not have anymore, or some that other species did not have back then. Even though it is subjected to much debate, one of the most widely accepted theories however, is that Homo sapiens interbred with the slightly more primitive species of man, the Neanderthal.
A World Lit Only By Fire by William Manchester is not only informative of the conflicts that occurred in Europe, but it is humorous and includes perspectives and anecdotes that are not viewed as impartial. It is structured into three separate sections: The Medieval Mind, The Shattering and One Man Alone.
Debate started to arise when an archaeologist by the name of Thomas D. Dillehay found artifacts of people existing 14,600 years ago, before Clovis, in Monte Verde, a site in southern Chile. These people slept in hide tents, had access to seafood and potatoes, and shared similar characteristics to other artifacts found in North Ame...
(Mazzassa – Lea's science). Calcium silicate hydrate is the fundamental result of lime-pozzolan response. Calcium aluminous hydrate, hydrated gehlenite, calcium carboaluminate, ettringite and calcium aluminous monosulfate are a percentage of alternate items that outcome from the lime-pozzolan response notwithstanding calcium silicate hydrate. (Admixtures for cement T.erdogan). The hydration between slica of pozzolans and calcium hydroxide are given by mathematical statement.
The ancestral lines of Neanderthals and modern humans is split roughly about 800,000 years ago, making them our closest relatives in the hominid ancestry. Neanderthals inhabited Europe and parts of the Western Asia before going extinct around 30,000 years ago. Neanderthals made and used a range of tools, they were able to control fire, make and wore clothing, were very skilled hunters of large animals however also ate plant foods, they lived in shelters, and occasionally made symbolic or ornamental objects, which no previous hominid species, had ever practiced this representative and complex conduct. Over this essay we will be covering some elemental information on Neanderthals, their differences and similarities anatomically with modern humans, along with their differences in behavior, and finally giving some possible implications for the timing of the development of culture.
Agatha Christie depicts a descriptive, fictional murder mystery in the novel ABC Murders. With the help of the narrator, Captain Arthur Hastings, Hercule Poirot solves the murders of four victims who are killed in alphabetical order by Franklin Clarke, more commonly known as ABC. The story elicits copious high points but the rare low point as well. Examples of these aspects can be found within the plot, setting, characters, conflict, and theme of the book. According to Stanford’s Suggested Reading List, the book is considered a “must read.” ABC Murders definitely holds up to the reputation placed upon it by Stanford and would be a favorable choice for anyone wishing to read a well written novel.
Although fire is linked to human life, as it is essential for survival, not only its use for food, security and warmth, particularly in the extreme cold weather
Almost no other material manages to carry such contradictory associations. Stigmatized on one hand, celebrated on the other, it evokes highly diverse reactions this material is cement. Cement is a finely ground powder binder, a substance that sets and hardens and can bind other materials together, when mixed with water forms a hardening paste of calcium silicate hydrates and calcium aluminates hydrates. Cement is used in mortar and concrete (bulk rock-like building material made from aggregate, sand, and water). By modifying the raw material mix and the temperatures utilized in manufacturing, compositional variations can be achieved to produce cements with different properties. Cement, chemically speaking, is a product including lime as the
Despite not having an established society or economy, man in the Paleolithic Age had increasing technology. Their weapons and tools were made of wood and stone, and they had manifested the ability to control fire. The Paleolithic Age also berthed language and thus established the first historical backgrounds of modern man. Paleolithic art gives the background for the culture of the time. Depicting a society classed only by sex: Men hunted, made weaponry and tools, and fought other nomadic bands; Women gathered, made clothing, and bore children.
Concrete is a composite material used widely in the construction industry. Concrete is basically a mixture of cement, water, aggregates and admixture (sometimes). Cement is a fine gray powder that consists of oxidizes calcium, silicon and aluminum. The aggregate used is normally gravel, crushed stone or sand. Admixture is a solid or liquid substance that gives a certain characteristics of the concrete. The cement reacts with water chemically and binds the aggregates together through a process called hydration during hardening or curing of concrete. It means that water helps in the hardening of the concrete while the cement bind the aggregate and also react with water to form a solid mass.
The Balme Library is one of Africa’s renowned research libraries and is the main library for the University of Ghana (Aguinis, 2009). The library consists of six departments, employs over 50 individuals and has over 100 thousand books, 500 microfilms, CD's, and tapes plus access to extensive electronic resources (Balme Library, University of Ghana, 2009). The library, like other organizations, was facing resource challenges and implemented numerous strategies, one of which was a performance management system (Aguinis, 2009). According to Aguinis (2009), there are six elements that are needed in a performance management system that include prerequisites, planning, execution, assessment, review, and performance renewal and reconstructing. However, the performance management system they implemented was missing several components that were needed to have a successful program. For this discussion the component of prerequisites will be evaluated regarding how the Balme Library implemented this aspect, how it affected their performance management system, and how to improve the implantation of prerequisites.
Throughout human history, people have made discoveries and innovations which made their lives easier and more efficient. Many of these creations have advanced our culture, while others have paved the way for future advancements and inspired new ways of thought. One example of this is the discovery of fire, which revolutionized the way humans act and think. Fire has a unique connection to humans, evolving alongside humanity, each growing in ways that wouldn't have been possible without the other.
One of the most important resources of any organization is its employees, the human resource. This makes it very important that these resources are properly managed; so that they thrive and grow along with the organization. People stream defines performance management as “A process for establishing a shared workforce understanding about what is to be achieved at an organizational level. It is about aligning the organizational objectives with the employees’ agreed skills, competency requirements, development plans and the delivery of results. The emphasis is on improvement, learning and development in order to achieve the overall business strategy and to create a high performance work force”. The performance management process involves various stages such as goal setting, skills development, performance measuring against the set goals, mentoring/coaching to enable employees to focus and achieve their goals followed by assessment of performance and any further development plans as required. Let us look at these steps one by one.
Constituent materials are the fundamental materials required to produce concrete. The constituent materials of concrete consist of mainly three materials which are cement, aggregate and water, with admixtures included as addictive to alter the characteristics of the concrete (Scalenghe et al., 2011). “Cement is the chemically active constituent but its reactivity is only brought into effect on mixing with water” (Dhir & Yap, 1984). According to Bye (1999), in the industry, Portland cement, which was developed in 1824 by using calcium carbonate found in calcareous rocks, namely limestone or chalk and silica, alumina, and iron oxide found in sedimentary rock, namely clay or shale. Bye (1999) said that cement is produced by grinding the quarried limestone to powder form, blending it with water and heat with pulverized coal to drive out water at 100°C, carbon dioxide at 800°C and clinker at 1400°C, which is then cooled, grounded and mixed with 1%-5% gypsum to alter it fineness and goes through final grinding and the cement is ready to be distributed to the market. According to Sismondo & Sergio (2009), aggregate, which builds up the majority of the volume stability and the durability of the resulting concrete and is of lower price than cement, is always used to the maximum extend as possible in the production of concrete for maximum profit. Aggregates ar...
The presence, or absence, of skills that relate to communication with oneself (intrapersonal communication) are critical influencers of many other aspects of oneself (Beebe, 2015). In particular, one’s intrapersonal communication impresses on one’s intrapersonal communication: mutual communication between yourself and at least one other (Beebe, 2015). The relationship between these two types of communication is complex and worth exploring. Using examples from seminar and my own life, in this paper, I will analyze my own self-concept and perception, and relate my intrapersonal communication skills to their effects on my interpersonal communication skills. I