The distance of the energy level from the nucleus is important in determining the corresponding peak position in the photoelectron spectrum because the closer the electron, the more interaction and attraction, and the more energy is needed to get rid of that electron.
Spectrum, in physics, is the intensity of mild because it varies with wavelength or frequency. An instrument designed for visual observation of spectra is called a spectroscope, and an instrument that photographs or maps spectra is a spectrograph.
A spectrum is defined as the characteristic wavelengths of electromagnetic radiation (or an element thereof) that are emitted or absorbed by way of an item or substance, atom, or molecule. Examples of a spectrum include the rainbow, the emission colors from the sun, and the infrared absorption wavelengths from a molecule.
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<span>The most crucial principle of ELISA (enzyme-linked immunosorbent assay) is a highly specific antibody-antigen interaction.</span>
ELISA is a biochemical technique used to detect the presence of an antibody or an antigen in the biological sample. Simply described, in an ELISA, an antigen is immobilized on a solid surface and then a specific antibody is applied over the surface so that it can bind to the antigen. The antibody is usually linked to an enzyme, and in the final step, a substrate for that enzyme is added. The enzyme can convert it to some detectable signal, most commonly a color change. <span>Medical usage of ELISA is in the diagnosis of HIV infection, pregnancy tests, measurement of cytokines…</span>
Answer: A) The resident populations are more likely affected by these threats because of their proximity to shore.
Explanation:
All of these threats are higher in coastal regions.
As contaminants usually reach the ocean through rivers or because of coastal cities, the highest degree of pollution is there. All chemicals will accumulate in this region first, before they disperse into the offshore region. This is also caused by the fact that the coastal waters have a lower volume and surface area than the offshore which results in a higher degree of contamination.
