I would say, C. Because an controlled variable is an experimental element which is constant and unchanged throughout the course of the investigation.
Answer;
-Nuclei acid
Explanation;
-Nucleic acids are molecules that allow organisms to transfer genetic information from one generation to the next. These macromolecules store the genetic information that determines traits and makes protein synthesis possible.
-Nucleic acids include DNA and RNA. These molecules are composed of long strands of nucleotides. Nucleotides are composed of a nitrogenous base, a five-carbon sugar, and a phosphate group.
Well, Since the fertility of the soil is obviously incorrect due to it being dirt, I say there is a big chance the answer is C, Since the number of pry population always is an abiotic limiting factor. Hope this helps :)
<span>A change in a DNA sequence is called a mutation. Mutation occurs through a large variety of processes. The most written about in the press is of course the chemical-induced mutations. There is a large variety of chemicals that can induce mutations, most of time by binding to the DNA itself and breaking it, forcing an imperfect reparation or by blocking the replication of the DNA, which will force the replication system to duplicate it imperfectly, i really hope this helps, good luck babe!!</span>
Answer:
a) mucosa, submucosa, hyaline cartilage, adventitia
Explanation:
The wall of the trachea can be divided into four layers from the deep region to the superfacial region :
These are; mucosa, submucosa, the musculocartilaginous layer (hyaline cartilage), and the adventitia.
<u>The adventitia</u> is a connective tissue layer that combines with the musculocutaneous layer and with the connective tissue that encircles the trachea. It is composed of loose areolar tissue. This areolar tissue permits a considerable amount of movement of the trachea along its length.
<u>The musculocartilaginous layer</u> consists of the cartilaginous plates, fibroelastic tissue, and the tracheal muscle. The cartilaginous plates number and are composed of hyaline cartilage surrounded by perichondrium.
<u>The submucosa</u> contains many elastic fibers and fat cells and many small seromucous tubular glands, which open into the lumen of the trachea.
<u>The mucosa</u> has numerous low longitudinal folds and is lined with pseudostratified columnar ciliated epithelium, which contains numerous goblet cells and rests on a basement membrane.
I hope that helps!
