The right answer is 2 and 3.
The applications of spectroscopy are very diverse; they are in many areas: fundamental physics, astrophysics, nuclear physics, plasma physics, solid state physics, materials science, metrology, microelectronics, new light sources, laser isotope separation, and so on. The R.M.N. provided a very powerful medical imaging technique. Other analysis techniques are similar to spectrometry, in the sense that a spectrum is measured as a function of energy or frequency. Acoustic spectroscopy concerns pressure vibrations for which the notions of frequency and wavelength are similar, although the phenomenon is of a nature quite different from electromagnetic waves. Here again, the frequency range extends far beyond the audible frequency range, from infrasound to ultrasound. Mass spectrometry produces spectra as a function of the mass-to-electric charge ratio of atomic or molecular ions.
I believe the answer is head-on and port (left). The side lights are usually visible to vessels approaching from the front or the side. The red light usually indicates a vessel's port (left) side while the green light indicates a vessel's starboard (right) side. These lights ensure that there is safety at night as the vessels navigate.
<span>The F2 generation would have included a higher percentage of pea plants producing round, yellow peas. As the f2 generation included 315 plants producing round yellow peas, 108 with round green peas, 101 with wrinkled yellow peas, and 32 with wrinkled green peas which all are in the ratio 9:3:3:1.</span>
<span>An incorrect number of
chromosomes is the most common form of genetic disorder that causes the fetus
to spontaneously abort. </span>The
human cells normally contain 23 pairs of chromosomes, for a total of 46
chromosomes in each cell. Error in one or more of the meiosis, mitosis,
maternal age, or environment are the possible cause of the chromosome
abnormalities. These abnormalities in the number chromosomes can cause problems
with development, growth and function of the body's systems. These changes can
occur in early fetal development, or in any cell after birth during the
formation of reproductive cells (sperm and eggs).
