DNA Helix, DNA Supercoils, Nucleosome, Chromosome
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Water (H
2O) is a polar inorganic compound that is at room temperature a tasteless and odorless liquid, which is nearly colorless apart from an inherent hint of blue. It is by far the most studied chemical compound and is described as the "universal solvent" [17][18] and the "solvent of life".[19] It is the most abundant substance on Earth[20] and the only common substance to exist as a solid, liquid, and gas on Earth's surface.[21] It is also the third most abundant molecule in the universe.[20]
<span>The significance of chitin in arthropods is Chitin is a structural carbohydrate that forms their exoskeleton. </span>
Answer:
The xylem consists of tracheary elements, xylem parenchyma cells, and xylem fiber cells.
