Throughout the first section of RichardDawkins’sRiverOut of Eden, mainly in Chapters 1 and 3, Dawkins discusses how evolution, itself, is gradual. “Do good by stealth. A key feature of evolution is its gradualness” (Dawkins 83). Gradualism in evolution is looked at in depth in both Chapter One, entitled The DigitalRiver, and Chapter Three, entitled Do Good by Stealth, where Dawkins elaborates on the topic even further. Dawkins, a man of somewhat argumentative nature, is quick to shoot down false claims made my Creationists in these chapters, where he uses solid evidence in the scientific world in order to support his view of gradual evolution. Even though the topic of evolution is often a touchy subject, Dawkins dives head first into converting any non-believers to the side of science and tangible results. He discusses gradualism as a principle, the Argument from Personal Incredulity and how the principle of gradualism refutes it, along with how Chapter 3 complements Chapter 1.
Dawkins begin the discussion about the gradualism of evolution being a principle, citing that it is the only device that which can explain the intricacy we witness all around us in nature. He does, however, add that evolution is not always gradual; he cites that sudden occurrences can happen that could cause a species to become extinct or to rapidly evolve. Evolution, he adds, is not...
...RiverOut of EdenRiverout of Eden is a book that focuses on Charles Darwin's theory of evolution. It's author, Richard Dawkins has also written other books on evolution such as The Selfish Gene, The Blind Watchmaker, and The Extended Phenotype. In the book RiverOut of Eden, Dawkins relates life to being a river of genes that flows through time and how genes use organisms as temporary bodies to live in. So even when an organism dies, the genes live on through the offspring.
One of the first claims Dawkins makes is that every organism that has ever lived can look back at their ancestors and know that not a single one of their ancestors died in infancy. Every ancestor made it to adulthood and had procreated at least once in their lifetime. All of us can proudly say we are the product of an unbroken chain of successful ancestors all the way down the line to the first single-celled organism.
Another claim Dawkins makes is that all living organisms in nature have inherited good genes from successful ancestors. He is going on the theory that success of an organism is measured by its ability to survive and reproduce. Each generation can be thought of as a sieve that filters out all of the bad genes that have been replicated or mutated. Good genes fall through the sieve into the next generation of...
Instructor Marnie Nollette
July 19, 2013
I. The Demographics
II. The History
III. Advantages versus disadvantages
IV. Environmental Impact
Whenever there is the mention of the great State of Texas, one tends to automatically visualize a sweltering hot, baron wasteland, saturated with 6-foot rattlesnakes, enormous oil wells, and handsome cowboys galloping on horses, with a six shooter attached to their hip. Few people are aware that deep in the heart of Texas, there is a paradise known as the Hill Country, and the mighty Guadalupe River rises from abundant, natural springs to form two hundred and fifty five miles of beautiful, crystal clear, trout jumping, snake winding water. Through the passage of time, this impressive river has captured and retained cultural settlements that have shaped towns and formed cities all the way to its inevitable fusion of waters in the Gulf of Mexico. Its beauty however, can be deceiving, as this welcoming jewel in the desert with its soothing, tranquil exquisiteness, contributed to one of the most horrific tragedies in the twentieth century for Texas.
When visiting this glorious river, latent with indented limestone rock from centuries of...
River Padma in Rainy Season
River Meghna from the bridge over the river
Bangladesh is a riverine country. About 800 rivers including tributaries flow through the country constituting a waterway of total length around 24,140 km. Most of the country's land is formed through silt brought by the rivers. Following is a list of some of the major rivers of Bangladesh:
* Bangali River
* Balu River
* Baral River
* Biskhali River
* Bhairab River
* Brahmaputra River
* Buriganga River
* Bura Gauranga River
* Chiknai River
* Chitra River
* Dakatia River
* Dhaleshwari River
* Dhansiri River
* Dharla River
* Dhepa River
* Dhanu River
* Feni River
* Garai River
* Gomti River
* Gorai-Madhumati River
* Halda River
* Ichhamati River
* Jaldhaka River
* Jamuna River
* Jinai River
* Kaliganga River
* Kangsha River
* Karatoya River
* Karnaphuli River...
Humans have a great impact on ecosystems and biodiversity, but they can also
have a negative impact too. Society has mistreated many landforms like rivers for
example. There are many types of negative impacts.
Damming is one of the three major negative human impacts because obstructing
the flow of a river or stream for energy production to create a lake causes the fish to
lose its ability to reproduce. Its habitat is destroyed and they cant survive.
Channeling rivers is another negative impact because t slows down the river flow
and creates algae to produce. When algae produces it deoxynates the water killing all
life in it. Farmers cause this by taking it for their own selfish needs.
Pollution would have to be the most significant because of the careless disposal
of trash and waste. People throw their trash wherever and whenever they want. They
also dump chemicals into the oceans to get “rid of” it and it hurts all of the undersea
If I had to create a solution to end all of these impacts I would band dumping,
channeling, and enforce the law on pollution policy. Security guards should watch the
rivers at all times and anyone to go against the rules should be punished. ...
Pink feldspar - is a hardness of 6.0, cleavage is good in two directions, forming right angle prisms, color is off white, yellow, or shades of red, orange to brown, luster is vitreous to dull if weathered, opaque, one of the most common minerals.
Mica - is soft, flexible sheet-like crystal form
Important properties of granite and basalt and their importance:
The continuous movement of water on, above, and below the surface of earth.
Movements of water
Groundwater, infiltration, surface runoff, precipitation, evaporation, transpiration(like evaportion), sublimation(solid to gas)
Atmosphere = .001%
Glaciers and Polar Ice (Cryosphere) = 2.97%
Lakes and Rivers = .009%
Underground water = 1.05%
Biosphere = .001%
Salt Water = 95.6%
Climate change and rivers
Weather vs. Climate
The difference between weather and climate is a measure of time. Weather is what conditions of the atmosphere are over a short period of time, and climate is how the atmosphere "behaves" over relatively long periods of time.
Incoming solar radiation is a total of 342 watts/m2… 168 watts absorbed by the surface… 67 watts absorbed by the atmosphere… 77 watts reflects off the clouds and 30 watts reflect of mountains… in total 107 watts is reflected solar radiation…
Carbon Cycle and Anthropogenic changes to the carbon cycle
The carbon cycle is the biogeochemical cycle by which carbon is exchanged...
...describe a location of a river or channel where there is a sharp change in channel slope, such as a waterfall or lake. Knickpoints reflect different conditions and processes on the river often caused by previous erosion due to glaciation or variance in lithology.
River terrace- River terrace, bench or step that extends along the side of a valley and represents a former level of the valley floor. A terrace results from any hydrological or climatic shift that causes renewed down cutting. It generally has a flat top made up of sedimentary deposits and a steep fore edge and it may be the remains of an old floodplain, cut through by the river and left standing above the present floodplain level. Another type of terrace is cut into bedrock and may have a thin veneer of alluvium, or sedimentary deposits. In paired terraces, the terrace features on each side of a valley correspond.
Incised meanders- Incised meanders are meanders which are particularly well developed and occur when a river’s base level has fallen giving the river a large amount of vertical erosion power, allowing it to down cut. There are two types of incised meanders, entrenched meanders and ingrown meanders. Entrenched meanders are symmetrical and form when the river downcuts particularly quickly. Due to the speed which the river downcuts, there is little opportunity for lateral erosion to occur...
...By the River
Each person possesses a distinct personality and a unique set of traits to match. Along with an individual identity, each person also possesses deviating dreams and desires. For instance, in Jack Hodgin’s By the River, two polar personalities are displayed throughout the story by the couple, Jim and Crystal Styan. Additionally, while the story progresses and while the different natures of the couple are discovered, contradicting dreams and desires are also uncovered. A difference in people’s personalities ultimately leads to a difference between their aspirations and ambitions as well.
In the story Jim Styan possesses an outgoing and persuasive attitude, while Crystal Styan holds more of a docile and compliant nature. These personalities are demonstrated when the couple is confronted with their insecurities while at the movie theatres. When Jim is exposed to figures in movies who seem to be embarrassing and embarrass him, Jim reassures himself by making “a lot of noise so people will know he isn’t a bit like that himself” (5). In contrast to this, while Jim confronts his insecurities with self-affirmation through blatant laughter, Crystal faces her insecurity in a more passive and quiet approach. Greatly embarrassed to be seen with Jim, Crystal had quietly “slouched as far down in the seat as she could so no one could see she was there or had anything to do with Jim Styan” (6). Furthermore, Jim’s...