My cat used to drink from the garden pond and never seemed to suffer any ill effects, and you often see dogs drinking from muddy puddles. So why do humans have to be so careful and only drink clean water? Will it form sediment that gets buried beneath the seabed and eventually turns into plastic "oil" or "coal"? I had previously suspected that some tadpoles are late undergoing metamorphosis, but this one really missed the boat. Is this a recognised phenomenon, and what is the explanation? Is there an accepted ratio or does it vary, and if so by how much? Does this mean there would have been three sets of chicken twins?
Index to Creationist Claims
Overview[ edit ] The Multiregional hypothesis was proposed in by Milford H. Wolpoff , Alan Thorne and Xinzhi Wu. Howells , who confused Weidenreich's hypothesis with a polygenic "candelabra model" in his publications spanning five decades: We believe it comes from the confusion of Weidenreich's ideas, and ultimately of our own, with Coon's. The historic reason for linking Coon's and Weidenreich's ideas came from the mischaracterizations of Weidenreich's Polycentric model as a candelabra Howells, , , , , that made his Polycentric model appear much more similar to Coon's than it actually was.
Alan Templeton for example notes that this confusion has led to the error that gene flow between different populations was added to the Multiregional hypothesis as a "special pleading in response to recent difficulties", despite the fact:
It's a hotbed of tectonic activity where ancient layers are forced to the surface.
Yet we're unmistakably tied to our ape origins. Millions of years ago, we were apes, living ape lives in Africa. So how did we get from that to this? What set us on the path to humanity? The questions are huge. But at last, there are answers. More than 6, , years ago we took that first step to separate from the apes. We see the launching of the career that ultimately led to Homo sapiens.
And 3, , years ago, we see the roots of our big brain begin to take hold in a tiny creature, more like a chimp than a human. The frontier of human evolution is really being brought to this razor-sharp edge. And we now know that for millions of years, many different human-like species lived together on the planet, until one day there was only us:
Before the scientific era, people often made up imaginative stories to explain what they saw in the world. The scientific method changed that by requiring rigorous experimentation to test hypotheses and determine what is real. With the Theory of Evolution, people are back to making up imaginative stories. The primary advantage of complete metamorphosis is eliminating competition between the young and old.
They simply fill in the big gaps with make-believe creatures to fit the picture.
Detroit Institute of Arts by Maia C. According to legend, the young and hungry Marduk acquired his pet after volunteering for combat and handily defeating a series of foes. This dainty dragon combines features of multiple animals. A horn or perhaps two horns in perfect profile on the head likens it to a unicorn. The creature sports mammalian front legs and avian hind legs with long, sharp claws. Scales run from the head to the apparently prehensile tail.
A forked tongue protrudes from the dragon's rippled snout. Whether the dragon of Marduk was remotely inspired by, or intended to represent, an actual animal is hard to say, but Lavers argues that visitors to the imposing monuments of imperial capitals may very well have taken images like this literally, fueling legends about fantastic creatures.
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A system is an idealized stratigraphic column based on the physical rock record of a type area type section correlated with rocks sections from many different locations planetwide. See Cretaceous—Paleogene boundary as example. At any location, rock sections in a given system are apt to contain gaps unconformities analogous to missing pages from a book. In some places, rocks from the system are absent entirely due to nondeposition or later erosion.
Second edition, Haughton Publishing, Dallas, Texas.
Species Sub-species It should be kept in mind that there is no such thing as a phylum or a family. Those are just convenient names, and are like rooms in a zoo or botanical garden; each one with a different collection of plant or animal species. It is the species which are alive; the room is not. The terms "phyla, classes, orders, families," and most of the "genera" are merely category labels. It is only the species with some genera included, which should be labeled as species which count, for they only have any real, living existence.
Higher categories are all more or less a matter of opinion. Here is an example of how classification works. This is the classification of the house cat: If you go to the zoo, you will see a sign on one cage, "Giant Panda," with the words, "Ailuropoda melanoleuca" just below it. The first line is the common name of this large black-and-white bear from China; the second line is its "scientific name. The first word is the Genus, and the second is species. Sometimes the name of the discoverer or namer is added as a third word.
The Swedish naturalist, Linnaeus, invented this method of scientific nomenclature in the s. Darwin recognized that there was no evidence that any species had evolved from any other species.
How accurate are Carbon-14 and other radioactive dating methods?
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Outlook Other Abstract U-Pb radioisotope dating is now the absolute dating method of first choice among geochronologists, especially using the mineral zircon. A variety of analytical instruments have also now been developed using different micro-sampling techniques coupled with mass spectrometers, thus enabling wide usage of U-Pb radioisotope dating. However, problems remain in the interpretation of the measured Pb isotopic ratios to transform them into ages.
Among them is the presence of non-radiogenic Pb of unknown composition, often referred to as common or initial Pb. There is also primordial Pb that the earth acquired when it formed, its isotopic composition determined as that of troilite in the Canyon Diablo iron meteorite. Subsequently new crustal rocks formed via partial melts from the mantle.
So the Pb isotope ratios measured in these rocks today must be interpreted before their U-Pb ages can be calculated. Various methods have been devised to determine this initial or common Pb, but all involve making unprovable assumptions. Zircon does incorporate initial Pb when it crystallizes. The amount of Pb cannot be measured independently and accurately.
Multiregional origin of modern humans
My friends call me Ape Jaw Evan. Click here to read about me and other media myths, frauds, and lies. The Theory of Evolution is not a scientific law or a law of biology. Failure to meet only one challenge proves the law is wrong.
Wise, letter to the editor, and replies by M.
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Climate instability put pressure on all of them.
See this page in: Hungarian , Russian , Spanish People who ask about carbon 14C dating usually want to know about the radiometric  dating methods that are claimed to give millions and billions of years—carbon dating can only give thousands of years. People wonder how millions of years could be squeezed into the biblical account of history. Clearly, such huge time periods cannot be fitted into the Bible without compromising what the Bible says about the goodness of God and the origin of sin, death and suffering —the reason Jesus came into the world See Six Days?
Christians , by definition, take the statements of Jesus Christ seriously. This only makes sense with a time-line beginning with the creation week thousands of years ago.
Problems with the U-Pb Radioisotope Dating Methods—1. Common Pb
I would like to read the report if available. Yeah, you better stop drinking that weed killer. People in the blogosphere say a lot of things we know to be true.
That which evolutionists call "microevolution," is nothing more than breeding within species and producing varieties subspecies ; it is not evolution.
Human Evolution Human evolution is the lengthy process of change by which people originated from apelike ancestors starting nearly five million years ago. The modern scientific study of human evolution is called paleoanthropology. A subfield of anthropology, this discipline searches for the roots of human physical traits, culture, and behavior. It attempts to answer questions: What makes us human? When and why did we begin to walk upright? How did our brains, language, art, music, and religion develop?