The dermal blood arteries work in dermal papillae to hydrate the epidermal cells.
<h3>What are dermal papillae used for?</h3>
The term "dermal papilla" can also be (DP). It is described as the hair follicle of an epithelial progenitor cell's chemical and physical niche. The dermal papilla's main job is to produce the hair shaft and rejuvenate the cycling section of the hair follicle. Dermal papillae are important because they reinforce the bond between the dermis and epidermis and reduce friction-related damage in places that are often used. Moreover, The dermis has a rough appearance thanks to the papillae, which interlocks with the epidermis above it to reinforce the bond between the two layers of skin. The papillae produce epidermal ridges on the palms and soles. These epidermal ridges give rise to fingerprints.
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Answer: 0.69 m/ mile.
Explanation:
The altitude gradient between two cities X and Y = 
Given: Two cities are separated by 200 miles.
City X has an altitude of 122 meters.
City Y has an altitude of 260 meters.
The altitude gradient between two cities X and Y =

Hence, the altitude gradient between the two cites = 0.69 m/ mile.
The property of semiconductors that makes them most useful for constructing electronic devices is that their conductivity<span> may easily be modified by introducing </span>impurities<span> into their </span>crystal lattice<span>. The process of adding </span>controlled impurities<span> to a semiconductor is known as </span>doping<span>.</span>
Answer:
At the “center” of each amino acid is a carbon called the α carbon and attached to it are four groups - a hydrogen, an α- carboxyl group, an α-amine group, and an R-group, sometimes referred to as a side chain.
Explanation:
James Watson<span> and</span>Francis Crick <span> discovered the three-dimensional structure of dna in 1953</span>