Answer:
A hydrogen bond is a type of attractive (dipole-dipole) interaction between an electronegative atom and a hydrogen atom bonded to another electronegative atom. This bond always involves a hydrogen atom. Hydrogen bonds can occur between molecules or within parts of a single molecule.
Answer:
Because of the UV radiations from the sun causes the damage to the DNA of the skin cells causing the formation of pyrimidine dimers and also causing inflammation and immune suppressiosn resulting in the formation of melanoma.
Explanation:
The main cause of skin cancer (melanoma) is too much ultraviolet radiation from the sun or the sunbeds.
The carcinogenic , inflammatory , immunosuppressive and DNA damaging properties of ultraviolet radiations contribute to the initiation , progression and metastasis of primary melanoma.
Melanoma usually occurs due to excessive exposure to the UV radiations in the sunlight resulting in awry in the melanin producing cells (melanocytes) that give color to the skin.
Answer:
A magnetic storm is a period of rapid magnetic field variation. It can last from ... When these events occur, we can experience a truly large magnetic storm
Explanation:
The writer could assert Taxonomy.
Which is responsible for many scientific classifications and
influences in various field of life sciences or biology. Evidences that Taxonomy uses to group or
categorizes species range from
<span><span>
1.
</span>"Fossil Records</span>
<span><span>
2.
</span>Comparative anatomy</span>
<span><span>
3.
</span>Comparative embryology</span>
<span>4.
Biochemical information</span>
<span><span>
5.
</span>Cellular structure</span>
<span><span>
6.
</span>Behavior</span>"
We also suggest that taxonomy has played various roles
mainly in many aspects in Zoology, Botany, Anatomy and Physiology –aspects that
include animal and human structures and functions. As the biotic community is
so diverse it is classified to Biodiversity and the existence of properly
assorting by set standard.
