what can fossils tell us about creatures from the past

Ngày tải lên: 09/08/2014, 01:22

... geologists, festooned with the tools of their trade, stared at the quarry from the nearby bridge. They had just come from the small auberge near the quarry that so gracefully served them lunch each day, ... the distant happenings at sea and in the air. Is there other evidence of what happened? It turns out that the amount of dust reaching the deep sea confirms suspicions that the world at the ... the iconic constituents of the Cretaceous period: There were none of the giant flat clams named Inoceramus, perhaps the most common animal fossil of the entire Cre- taceous; gone too were the...

Ngày tải lên: 08/04/2014, 01:22

... at the three locus for the Corsican and the Aquitaine provenances, and location of the statistics S D of Devinas popula - tion. B. S distribution at the locus FRPP91 for the Corsican and the ... microsatellite separately (figures 3A to 3D). The Devinas population was tested and was found to be of Corsican origin by using the three microsatellites pooled or by using either the FRPP91 or the ... distinct from the Aquitaine and the Corsica distribution curves, especially when the three microsatellites are pooled, or when locus FRPP91 or FRPP94 are used, since the Corsica and the Aquitaine...

Ngày tải lên: 08/08/2014, 14:20

... outside the EEA must apply to the Adjudication Committee at the RPSGB, which will make a decision on the equivalence of their pharmacy qualification. If passed, these pharmacists can enrol on a ... purposes) they can register with the RPSGB. Due to the requirement to apply to the Adjudication Committee at the beginning of this process, this entry route is commonly referred to as the "adjudication ... copies of these extracts since 2002. The anonymized August 2007 Register extract forms the basis for the analysis presented in this paper, but extracts from earlier years are sometimes used for...

Ngày tải lên: 18/06/2014, 17:20

... total U.S. primary energy use from the 1970s .The figure isredrawn from a DepartmentofEnergyreport (3)andsimplified from asummaryof dozensofforecasts. Actual use at the end of the century [105 exajoules ... obviously unobjectionable to the group making them—often the dominant socio-economic group—have often come under attack from other groups that consider themselves disenfranchised. Thus, the apparently technical ... ways we cannot anticipate. Static mod- elscannot keep pacewiththe long-termevolutionof the realworld,not justbecause their data and underlying algorithms are inevitably flawed, but because the world sometimes...

Ngày tải lên: 24/03/2014, 01:21

Ngày tải lên: 09/08/2014, 01:22

... creates a picture of the pancreas from the echoes. The picture can show a tumor in the pancreas. It can also show how deeply the cancer has invaded the blood vessels. Some doctors use the following ... attempt to find out the following: ã The size of the tumor in the pancreas ã Whether the tumor has invaded nearby tissues ã Whether the cancer has spread, and if so, to what parts of the body 12 U.S. ... glucose is used. Because cancer cells often use more glucose than normal cells, the pictures can be used to find cancer cells in the body. Also called positron emission tomography scan. Radiation...

Ngày tải lên: 22/03/2014, 16:21

... is one of the following: The cancer has grown through the inner layer to the submucosa, and cancer cells have spread to lymph nodes. —Or, the cancer has invaded the muscle layer. Cancer cells ... scanner is used to make detailed, computerized pictures of areas inside the body where the glucose is used. Because cancer cells often use more glucose than normal cells, the pictures can be used to ... groups also can help. In these groups, patients or their family members meet with other patients or their families to share what they have learned about coping with the disease and the effects of...

Ngày tải lên: 28/03/2014, 23:20

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Ngày tải lên: 08/08/2014, 21:20

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Ngày tải lên: 14/08/2014, 16:21

Ngày tải lên: 31/03/2015, 14:48

... for the young, they have an upper limit set at a relatively low number. They leave the most genes in the next generation by having the highest quality young they can. Which male they mate with can ... important, because a mistake in the form of poor genes or no help with the young can mean that they have lost their whole breeding effort for an entire year. Males, on the other hand, can leave the most ... pro- vides us with tools to use in the examination of ourselves and other species that can, if we apply them carefully, help us to remove ourselves from the center of things and struggle to see past...

Ngày tải lên: 01/06/2014, 10:54

Ngày tải lên: 14/08/2014, 21:20