• Biology
  • Alligators (In the Wild)

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    Thus a species� adaptation may be genetically equivalent, or approximately equivalent due to certain changes, and although this prevents a single adaptation truly being species-specific an sich, the coadapted system of adaptations may be. The centrality of models such as the billiard ball model of a gas, the Bohr model of the atom, the MIT bag model of the nucleon, the Gaussian-chain model of a polymer, the Lorenz model of the atmosphere, the Lotka-Volterra model of predator-prey interaction, the double helix model of DNA, agent-based and evolutionary models in the social sciences, and general equilibrium models of markets in their respective domains are cases in point.
  • Biology
  • A Tiger Grows Up (Wild Animals)

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    Eukaryotes and archaebacteria are the two most closely related of the three. Page 103 Headrest prevents head from snapping back over seat during rapid accelerations. 7. In this presentation, preliminary results of a two-part study of Zooniverse user motivations and behaviors are presented. Similarly, the inner membrane, which is highly convoluted so that a large number of infoldings called cristae are formed, also allows only certain molecules to pass through it and is much more selective than the outer membrane.
  • Biology
  • Creepy Caterpillars (Icky Animals! Small and Gross)

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    All of these organisms work to balance the population of organisms within the compost, which increases the efficiency of the entire process. They are part health & safety specialist, part risk assessor and part safety manager. Test if the color or wavelength of light will affect the chlorophyll content of a leaf. [E] How long a pinto bean seed would take to germinate and compare it to a kidney bean seed and a pinto bean seed planted in the dark. [E] Can marinating chicken prior to grilling reduce carcinogens? [P] [P] Global Warming or Global Cooling? [P] The Effects of GMO vs.
  • Biology
  • The Lungs (Look at Your Body)

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    This Yale College course, taught on campus twice per week for 50 minutes, was recorded for Open Yale Courses in Spring 2011. In 1953, American scientist James Watson and British scientist Francis Crick developed the model for deoxyribonucleic acid (DNA), a chemical that had (then) recently been deduced to be the physical carrier of inheritance. And if the sea is always advancing in one place and receding in another it is clear that the same parts of the whole earth are not always either sea or land, but that all this changes in the course of time.
  • Biology
  • The Singer in the Stream: A Story of American Dippers

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    Richard Hurley.) Endophyte-infected grasses control insects in two ways; they repel the insects from feeding and poison them if they do feed. And globally the magnetic field has weakened 10% since the 19th century. They display no hostility to man or other animals unless attacked. The difference lies in the (alleged) fact that the latter two cases (about perpetual motion machines and about massy objects) are physically necessary truths; the former (about moas) is a mere accidental truth.
  • Biology
  • Your Physical Body: From Birth to Old Age (Your Body For

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    This is because the strong triple bond between the N atoms in N2 molecules makes it relatively inert, or unreactive, whereas organisms need reactive nitrogen to be able to incorporate it into cells. In these cases the input from the material cause is greater or lesser than is usually the case. In contrast, the negatively charged nitrate ion is not held by soil particles and so can be washed out of the soil, leading to decreased soil fertility and nitrate enrichment of downstream surface and groundwater.
  • Biology
  • Polar Animals (Questions & Answers)

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    This is much the point of view offered by Tooby & Cosmides (1990a) in their analysis of individual uniqueness and human universal nature. Why are models so useful, and what are their limitations? If you are the owner of copyrighted material(s) appearing on this site, and wish it to be removed, please contact us directly. Anomalous data are those measurements that fall outside the normal, or expected, range of measured values.
  • Biology
  • Micromonsters in Your Home (Micromonsters: Microscopic Life

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    To understand the role of the cell membrane as a highly selective barrier that carries out. It is generally accepted to be true and univseral, and can sometimes be expressed in terms of a single mathematical equation. Tanzanite was unknown until a few decades ago but it has erupted into wide popularity. Inhibition of COX1 is responsible for the drugs� side effect of stomach irritation. Heterozygosity is simply the proportion of the population that is heterozygous.