Among electromagnetic waves, UV rays are most dangerous because exposure to these radiation cause serious problems in living organism. Therefore, along electromagnetic spectrum, wavelength increases, frequency decreases.
Electromagnetic wave is a wave which contain two component one is electric component and other is magnetic component. The electric and magnetic component are perpendicular to each other. There are so many wave that comes under electromagnetic wave like infrared wave , radio wave.
There is a relation between energy of wave. frequency of wave, and wavelength of wave
Mathematically,
E=hc/λ
where,
E = energy of electromagnetic wave
h is planks constant having value 6.67×10⁻³⁴js
c is speed of light that is 3×10⁸m/s
λ is the wavelength of electromagnetic wave
Wavelength is inversely proportional to frequency of wave. From left to right in electromagnetic spectrum, wavelength increases.
Therefore, along electromagnetic spectrum, wavelength increases, frequency decreases.
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A) ecosystem
B) community
C) population
D) biome
The level of organization is the arrangement of the organism from the simplest to the most complex level. Biome level of organization is not seen in Everglades. Thus, option D is correct.
The organizational level depicts the arrangement of the organism from the most simple chemicals to the most complex biome and biosphere. The chemicals and atoms aggregate to form cells and tissues. The tissues performing similar activities make the organ.
The various organs combine to form the organ system that in turn makes the organism. This organism makes the population. Various population of the species makes the community and ecosystem.
The various ecosystems combinedly make the biome followed by the biosphere. Everglades is not a biome as it involves various ecosystem that interacts together.
Therefore, option D. Everglades does not show biome.
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Answer:
The correct answer would be biological diversity
Biological diversity or biodiversity refers to the sum up of all the variety of life living on the planet earth.
It measures variation at three levels; ecosystem, species, and genetic levels.
Genetic variation refers to all the variation present at the genetic or genes level.
Species variation refers to the variety of species present in an area.
Ecosystem variation refers to the different types of habitats, biological communities, ecological processes et cetera.
Three adaptations of Nemo fish include:
Adaptation is a phenotypic and/or physical feature that confers an evolutionary advantage to the individual.
In conclusion, three adaptations of Nemo fish include coloration, rounded caudal fins and high velocity when swimming.
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Answer:
Explanation:
coral
B. Use a nucleic acid probe.
C. Subject the specimen to amniocentesis.
D. Use the polymerase chain reaction.
E. Subject the DNA to restriction enzymes.
Answer:
D. Use the polymerase chain reaction
Explanation:
Polymerase chain reaction (PCR) is a molecular technique used to make multiple copies or amplify a particular DNA sample. This enables scientist conduct thorough genetic analysis on minute sample of DNA, simply by amplifying it to a large quantity.
The PCR machine is usually used to amplify DNA fragment. The DNA fragments undergo three major steps successively: denaturation, annealing and elongation
The archaeologists would use the Polymerase Chain Reaction (PCR), a method for amplifying a specific fragment of DNA, to get sufficient DNA from the small scalp tissue sample for gene analysis. So the correct option is D.
To enhance the amount of DNA for a thorough analysis of the ancient human genes, the archaeologists would use the polymerase chain reaction (option D). The polymerase chain reaction, commonly known as PCR, is a method used to make numerous copies of a specified fragment of DNA. PCR is highly beneficial in research scenarios when only a small amount of DNA is available, as this technique can amplify a single or few copies of a specific DNA sequence to generate thousands to millions of copies. Techniques like electrophoresis, use of a nucleic acid probe, amniocentesis, or subjecting the DNA to restriction enzymes, are not primarily for amplification of DNA, but serve other purposes such as DNA separation, detection, prenatal testing, or DNA cutting at specific sequences, respectively.
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