Answer:
Seasons are caused by the Earth's auxiliary tilt. As the Earth revolves around the sun the tilt causes the Northern ans Southern hemispheres to trade places.
Explanation:
It is the Epithelium and blood-forming tissue. Endothelial cells are epithelial cells that shape a thin layer of straightforward squamous epithelium known as the endothelium. Vein endothelium is nonstop with the inward tissue coating of organs, for example, the mind, lungs, skin, and heart. Endothelial cells are gotten from endothelial undifferentiated organisms situated in bone marrow.
The answer is most likely skin.
The sample that is being discussed in the problem can be either DNA or RNA.
DNA and RNA are both very important molecules. Both of these hold immense value in biology since they store all the vital information required for living. The basic structures of the two are quite similar; the only difference is that DNA is double-stranded while RNA has a single strand.
DNA and RNA molecules both contain a five-carbon sugar (ribose), a phosphate group, and a nitrogenous base. Except for cytosine, guanine, and adenine, the fourth part is the phosphate group that exists in both. RNA has Uracil while DNA has Thymine.
Since it has not been mentioned here what the fourth part might be, the sample might be a DNA or an RNA molecule.
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